{"id":"CVE-2026-53910","aliases":["BELL-CVE-2026-53910","DEBIAN-CVE-2026-53910","EUVD-2026-47695","GHSA-9pwr-gcwm-8wj5","MGASA-2026-0434","OESA-2026-3341","OESA-2026-3342","OESA-2026-3343","OESA-2026-3344","OESA-2026-3444","RHSA-2026:45327","UBUNTU-CVE-2026-53910","USN-8692-1"],"status":"disputed","title":"Heap-based Buffer Overflow in GNU diffutils","description":"diff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple signed integer overflows in line‑mapping calculations. Incorrect arithmetic in mapping line ranges can result in corrupted values being used for memory allocation and loop bounds.\nWhen processing crafted diff output, these overflows may cause the application to allocate insufficient memory and subsequently perform out‑of‑bounds writes during internal processing. \nAn attacker who can control the output of the diff program used by diff3 (e.g. via --diff-program pointing to a malicious script) can trigger out-of-bounds writes, resulting in a crash and potentially remote code execution depending on the environment.\n\n\nThis issue has been fixed in commit 9ff04d5b84743e331e80b589335a52c5480d1815 \n\nNOTE:\nThe project maintainers claim that this is not a security issue. They state that the worst outcome this issue can cause is a crash of diff and that it cannot be used to escalate privileges.","severity":{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:L/SI:L/SA:L","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00291,"percentile":0.22007,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-190"],"published":"2026-07-22T13:42:50Z","modified":"2026-10-31T10:30:52Z","fixes":[{"ecosystem":"Alpaquita:25","package":"diffutils","fixed_in":["3.12-r1"],"sources":["osv"]},{"ecosystem":"Alpaquita:stream","package":"diffutils","fixed_in":["3.12-r1"],"sources":["osv"]},{"ecosystem":"BellSoft Hardened Containers:25","package":"diffutils","fixed_in":["3.12-r1"],"sources":["osv"]},{"ecosystem":"BellSoft Hardened Containers:stream","package":"diffutils","fixed_in":["3.12-r1"],"sources":["osv"]},{"ecosystem":"Mageia:10","package":"diffutils","fixed_in":["3.12-1.1.mga10"],"sources":["osv"]},{"ecosystem":"Mageia:9","package":"diffutils","fixed_in":["3.10-1.1.mga9"],"sources":["osv"]},{"ecosystem":"openEuler:22.03-LTS-SP4","package":"diffutils","fixed_in":["3.8-4.oe2203sp4"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP1","package":"diffutils","fixed_in":["3.10-3.oe2403sp1"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP3","package":"diffutils","fixed_in":["3.10-3.oe2403sp3"],"sources":["osv"]},{"ecosystem":"openEuler:20.03-LTS-SP4","package":"diffutils","fixed_in":["3.7-4.oe2003sp4"],"sources":["osv"]},{"ecosystem":"openEuler:24.03-LTS-SP4","package":"diffutils","fixed_in":["3.10-3.oe2403sp4"],"sources":["osv"]},{"ecosystem":"Red Hat:hummingbird:1","package":"diffutils","fixed_in":["0:3.12-6.1.hum1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:14.04:LTS","package":"diffutils","fixed_in":["1:3.3-1ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"diffutils","fixed_in":["1:3.3-3ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:18.04:LTS","package":"diffutils","fixed_in":["1:3.6-1ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:20.04:LTS","package":"diffutils","fixed_in":["1:3.7-3ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:22.04:LTS","package":"diffutils","fixed_in":["1:3.8-0ubuntu2.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:24.04:LTS","package":"diffutils","fixed_in":["1:3.10-1ubuntu0.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:26.04:LTS","package":"diffutils","fixed_in":["1:3.12-1ubuntu0.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpaquita:25","package":"diffutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.12-r0"},{"fixed":"3.12-r1"}]}]},{"source":"osv","ecosystem":"Alpaquita:stream","package":"diffutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.8-r1"},{"fixed":"3.12-r1"}]}]},{"source":"osv","ecosystem":"BellSoft Hardened Containers:25","package":"diffutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.12-r0"},{"fixed":"3.12-r1"}]}]},{"source":"osv","ecosystem":"BellSoft Hardened Containers:stream","package":"diffutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.8-r1"},{"fixed":"3.12-r1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"diffutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:3.10-1","1:3.10-2","1:3.10-3","1:3.10-4","1:3.12-1","1:3.8-4","1:3.8-4+hurd.1"]},{"source":"osv","ecosystem":"Debian:13","package":"diffutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:3.10-4","1:3.12-1"]},{"source":"osv","ecosystem":"Debian:14","package":"diffutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:3.10-4","1:3.12-1"]},{"source":"osv","ecosystem":"Mageia:10","package":"diffutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.12-1.1.mga10"}]}]},{"source":"osv","ecosystem":"Mageia:9","package":"diffutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.10-1.1.mga9"}]}]},{"source":"osv","ecosystem":"openEuler:22.03-LTS-SP4","package":"diffutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.8-4.oe2203sp4"}]}]},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP1","package":"diffutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.10-3.oe2403sp1"}]}]},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP3","package":"diffutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.10-3.oe2403sp3"}]}]},{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP4","package":"diffutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7-4.oe2003sp4"}]}]},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP4","package":"diffutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.10-3.oe2403sp4"}]}]},{"source":"osv","ecosystem":"Red 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10","tags":["report"]},{"url":"https://access.redhat.com/security/updates/classification/","tags":["article"]},{"url":"https://images.redhat.com/","tags":["article"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_45327.json","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2506145","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53910","tags":["advisory","report"]},{"url":"https://ubuntu.com/security/CVE-2026-53910","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-53910","title":"Heap-based Buffer Overflow in GNU diffutils","description":"diff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple signed integer overflows in line‑mapping calculations. Incorrect arithmetic in mapping line ranges can result in corrupted values being used for memory allocation and loop bounds.\nWhen processing crafted diff output, these overflows may cause the application to allocate insufficient memory and subsequently perform out‑of‑bounds writes during internal processing. \nAn attacker who can control the output of the diff program used by diff3 (e.g. via --diff-program pointing to a malicious script) can trigger out-of-bounds writes, resulting in a crash and potentially remote code execution depending on the environment.\n\n\nThis issue has been fixed in commit 9ff04d5b84743e331e80b589335a52c5480d1815 \n\nNOTE:\nThe project maintainers claim that this is not a security issue. They state that the worst outcome this issue can cause is a crash of diff and that it cannot be used to escalate privileges.","status":"disputed","published":"2026-07-22T13:42:50.539Z","modified":"2026-07-27T10:58:52.287Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:L/SI:L/SA:L","level":"low","assessor":"cna"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:19:59.761005Z"}],"euvd":[{"id":"EUVD-2026-47695","description":"diff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple signed integer overflows in line‑mapping calculations. Incorrect arithmetic in mapping line ranges can result in corrupted values being used for memory allocation and loop bounds.\nWhen processing crafted diff output, these overflows may cause the application to allocate insufficient memory and subsequently perform out‑of‑bounds writes during internal processing. \nAn attacker who can control the output of the diff program used by diff3 (e.g. via --diff-program pointing to a malicious script) can trigger out-of-bounds writes, resulting in a crash and potentially remote code execution depending on the environment.\n\n\nThis issue has been fixed in commit 9ff04d5b84743e331e80b589335a52c5480d1815 \n\nNOTE:\nThe project maintainers claim that this is not a security issue. They state that the worst outcome this issue can cause is a crash of diff and that it cannot be used to escalate privileges.","status":"published","published":"2026-07-22T13:42:50Z","modified":"2026-07-27T10:58:52Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:L/SI:L/SA:L","level":"low"}],"updated_at":"2026-11-02T18:19:38.034212Z"}],"ghsa":[{"id":"GHSA-9pwr-gcwm-8wj5","title":"diff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple...","description":"diff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple signed integer overflows in line‑mapping calculations. Incorrect arithmetic in mapping line ranges can result in corrupted values being used for memory allocation and loop bounds.\nWhen processing crafted diff output, these overflows may cause the application to allocate insufficient memory and subsequently perform out‑of‑bounds writes during internal processing. \nAn attacker who can control the output of the diff program used by diff3 (e.g. via --diff-program pointing to a malicious script) can trigger out-of-bounds writes, resulting in a crash and potentially remote code execution depending on the environment.\n\n\nThis issue has been fixed in commit 9ff04d5b84743e331e80b589335a52c5480d1815","status":"published","published":"2026-07-22T15:31:25Z","modified":"2026-07-22T15:31:33Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T15:09:39.270941Z"}],"nvd":[{"id":"CVE-2026-53910","description":"diff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple signed integer overflows in line‑mapping calculations. Incorrect arithmetic in mapping line ranges can result in corrupted values being used for memory allocation and loop bounds.\nWhen processing crafted diff output, these overflows may cause the application to allocate insufficient memory and subsequently perform out‑of‑bounds writes during internal processing. \nAn attacker who can control the output of the diff program used by diff3 (e.g. via --diff-program pointing to a malicious script) can trigger out-of-bounds writes, resulting in a crash and potentially remote code execution depending on the environment.\n\n\nThis issue has been fixed in commit 9ff04d5b84743e331e80b589335a52c5480d1815 \n\nNOTE:\nThe project maintainers claim that this is not a security issue. They state that the worst outcome this issue can cause is a crash of diff and that it cannot be used to escalate privileges.","status":"disputed","published":"2026-07-22T14:17:21.03Z","modified":"2026-10-24T13:10:00.147Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low","assessor":"secondary"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:12:32.089897Z"}],"osv":[{"id":"CVE-2026-53910","title":"Heap-based Buffer Overflow in GNU diffutils","description":"diff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple signed integer overflows in line‑mapping calculations. Incorrect arithmetic in mapping line ranges can result in corrupted values being used for memory allocation and loop bounds.\nWhen processing crafted diff output, these overflows may cause the application to allocate insufficient memory and subsequently perform out‑of‑bounds writes during internal processing. \nAn attacker who can control the output of the diff program used by diff3 (e.g. via --diff-program pointing to a malicious script) can trigger out-of-bounds writes, resulting in a crash and potentially remote code execution depending on the environment.\n\n\nThis issue has been fixed in commit 9ff04d5b84743e331e80b589335a52c5480d1815 \n\nNOTE:\nThe project maintainers claim that this is not a security issue. They state that the worst outcome this issue can cause is a crash of diff and that it cannot be used to escalate privileges.","status":"published","published":"2026-07-22T13:42:50.539Z","modified":"2026-10-31T10:30:52.137564415Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:L/SI:L/SA:L","level":"low"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T15:45:08.132336Z"},{"id":"DEBIAN-CVE-2026-53910","description":"diff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple signed integer overflows in line‑mapping calculations. Incorrect arithmetic in mapping line ranges can result in corrupted values being used for memory allocation and loop bounds. When processing crafted diff output, these overflows may cause the application to allocate insufficient memory and subsequently perform out‑of‑bounds writes during internal processing.  An attacker who can control the output of the diff program used by diff3 (e.g. via --diff-program pointing to a malicious script) can trigger out-of-bounds writes, resulting in a crash and potentially remote code execution depending on the environment.   This issue has been fixed in commit 9ff04d5b84743e331e80b589335a52c5480d1815   NOTE: The project maintainers claim that this is not a security issue. They state that the worst outcome this issue can cause is a crash of diff and that it cannot be used to escalate privileges.","status":"published","published":"2026-07-22T14:17:21.03Z","modified":"2026-10-25T09:47:31.541191538Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low"}],"updated_at":"2026-11-02T15:45:57.236551Z"},{"id":"OESA-2026-3341","title":"diffutils security update","description":"GNU Diffutils is a package of several programs related to finding differences between files.\r\n\r\nSecurity Fix(es):\n\ndiff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple signed integer overflows in line‑mapping calculations. Incorrect arithmetic in mapping line ranges can result in corrupted values being used for memory allocation and loop bounds.\nWhen processing crafted diff output, these overflows may cause the application to allocate insufficient memory and subsequently perform out‑of‑bounds writes during internal processing. \nAn attacker who can control the output of the diff program used by diff3 (e.g. via --diff-program pointing to a malicious script) can trigger out-of-bounds writes, resulting in a crash and potentially remote code execution depending on the environment.\n\n\nThis issue has been fixed in commit 9ff04d5b84743e331e80b589335a52c5480d1815 \n\nNOTE:\nThe project maintainers claim that this is not a security issue. They state that the worst outcome this issue can cause is a crash of diff and that it cannot be used to escalate privileges.(CVE-2026-53910)","status":"published","published":"2026-08-13T14:00:04Z","modified":"2026-08-16T01:45:12.076517677Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T15:52:47.217107Z"},{"id":"OESA-2026-3342","title":"diffutils security update","description":"GNU Diffutils is a package of several programs related to finding differences between files.\r\n\r\nSecurity Fix(es):\n\ndiff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple signed integer overflows in line‑mapping calculations. Incorrect arithmetic in mapping line ranges can result in corrupted values being used for memory allocation and loop bounds.\nWhen processing crafted diff output, these overflows may cause the application to allocate insufficient memory and subsequently perform out‑of‑bounds writes during internal processing. \nAn attacker who can control the output of the diff program used by diff3 (e.g. via --diff-program pointing to a malicious script) can trigger out-of-bounds writes, resulting in a crash and potentially remote code execution depending on the environment.\n\n\nThis issue has been fixed in commit 9ff04d5b84743e331e80b589335a52c5480d1815 \n\nNOTE:\nThe project maintainers claim that this is not a security issue. They state that the worst outcome this issue can cause is a crash of diff and that it cannot be used to escalate privileges.(CVE-2026-53910)","status":"published","published":"2026-08-13T14:00:05Z","modified":"2026-08-16T01:45:12.177588233Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T15:52:47.217107Z"},{"id":"OESA-2026-3343","title":"diffutils security update","description":"GNU Diffutils is a package of several programs related to finding differences between files.\r\n\r\nSecurity Fix(es):\n\ndiff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple signed integer overflows in line‑mapping calculations. Incorrect arithmetic in mapping line ranges can result in corrupted values being used for memory allocation and loop bounds.\nWhen processing crafted diff output, these overflows may cause the application to allocate insufficient memory and subsequently perform out‑of‑bounds writes during internal processing. \nAn attacker who can control the output of the diff program used by diff3 (e.g. via --diff-program pointing to a malicious script) can trigger out-of-bounds writes, resulting in a crash and potentially remote code execution depending on the environment.\n\n\nThis issue has been fixed in commit 9ff04d5b84743e331e80b589335a52c5480d1815 \n\nNOTE:\nThe project maintainers claim that this is not a security issue. They state that the worst outcome this issue can cause is a crash of diff and that it cannot be used to escalate privileges.(CVE-2026-53910)","status":"published","published":"2026-08-13T14:00:06Z","modified":"2026-08-16T01:45:13.464523707Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T15:52:47.217107Z"},{"id":"OESA-2026-3344","title":"diffutils security update","description":"GNU Diffutils is a package of several programs related to finding differences between files.\r\n\r\nSecurity Fix(es):\n\ndiff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple signed integer overflows in line‑mapping calculations. Incorrect arithmetic in mapping line ranges can result in corrupted values being used for memory allocation and loop bounds.\nWhen processing crafted diff output, these overflows may cause the application to allocate insufficient memory and subsequently perform out‑of‑bounds writes during internal processing. \nAn attacker who can control the output of the diff program used by diff3 (e.g. via --diff-program pointing to a malicious script) can trigger out-of-bounds writes, resulting in a crash and potentially remote code execution depending on the environment.\n\n\nThis issue has been fixed in commit 9ff04d5b84743e331e80b589335a52c5480d1815 \n\nNOTE:\nThe project maintainers claim that this is not a security issue. They state that the worst outcome this issue can cause is a crash of diff and that it cannot be used to escalate privileges.(CVE-2026-53910)","status":"published","published":"2026-08-13T14:00:08Z","modified":"2026-08-16T01:45:16.368987844Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T15:52:47.217107Z"},{"id":"OESA-2026-3444","title":"diffutils security update","description":"GNU Diffutils is a package of several programs related to finding differences between files.\r\n\r\nSecurity Fix(es):\n\ndiff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple signed integer overflows in line‑mapping calculations. Incorrect arithmetic in mapping line ranges can result in corrupted values being used for memory allocation and loop bounds.\nWhen processing crafted diff output, these overflows may cause the application to allocate insufficient memory and subsequently perform out‑of‑bounds writes during internal processing. \nAn attacker who can control the output of the diff program used by diff3 (e.g. via --diff-program pointing to a malicious script) can trigger out-of-bounds writes, resulting in a crash and potentially remote code execution depending on the environment.\n\n\nThis issue has been fixed in commit 9ff04d5b84743e331e80b589335a52c5480d1815 \n\nNOTE:\nThe project maintainers claim that this is not a security issue. They state that the worst outcome this issue can cause is a crash of diff and that it cannot be used to escalate privileges.(CVE-2026-53910)","status":"published","published":"2026-08-20T09:58:17Z","modified":"2026-08-20T10:15:08.993018122Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T15:52:47.217107Z"},{"id":"RHSA-2026:45327","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update","status":"published","published":"2026-08-05T10:36:11Z","modified":"2026-09-08T10:14:58Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T15:53:20.984762Z"},{"id":"UBUNTU-CVE-2026-53910","description":"diff3 tool from GNU diffutils is vulnerable to a heap‑based buffer overflow due to multiple signed integer overflows in line‑mapping calculations. Incorrect arithmetic in mapping line ranges can result in corrupted values being used for memory allocation and loop bounds. When processing crafted diff output, these overflows may cause the application to allocate insufficient memory and subsequently perform out‑of‑bounds writes during internal processing. An attacker who can control the output of the diff program used by diff3 (e.g. via --diff-program pointing to a malicious script) can trigger out-of-bounds writes, resulting in a crash and potentially remote code execution depending on the environment. This issue has been fixed in commit 9ff04d5b84743e331e80b589335a52c5480d1815 NOTE: The project maintainers claim that this is not a security issue. They state that the worst outcome this issue can cause is a crash of diff and that it cannot be used to escalate privileges.","status":"published","published":"2026-07-22T14:17:00Z","modified":"2026-08-31T22:15:27.568721235Z","cvss":[{"version":"4.0","score":2.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:L/SI:L/SA:L","level":"low"}],"updated_at":"2026-11-02T16:56:41.382716Z"},{"id":"BELL-CVE-2026-53910","status":"published","published":"2026-07-28T06:05:31.992127Z","modified":"2026-09-09T06:00:35.61865Z","updated_at":"2026-11-02T15:28:24.657778Z"},{"id":"MGASA-2026-0434","title":"Updated diffutils packages fix a security vulnerability","description":"Heap-based Buffer Overflow in GNU diffutils. (CVE-2026-53910)\n","status":"published","published":"2026-09-23T01:45:55Z","modified":"2026-09-23T02:00:06.828098621Z","updated_at":"2026-11-02T15:49:43.795591Z"},{"id":"USN-8692-1","title":"diffutils vulnerability","description":"It was discovered that GNU diffutils incorrectly handled certain integer\narithmetic when mapping line ranges in diff3. A local attacker could\npossibly use this issue to cause diff3 to crash, resulting in a denial of\nservice.","status":"published","published":"2026-08-31T10:27:56Z","modified":"2026-08-31T22:26:23.970191235Z","updated_at":"2026-11-02T16:58:26.907654Z"}]}}