{"id":"CVE-2008-7256","aliases":["BELL-CVE-2008-7256","EUVD-2008-7212","GHSA-w478-8x45-v99x","RHSA-2010:0631"],"status":"published","title":"mm/shmem.c in the Linux kernel before 2.6.28-rc8, when strict overcommit is enabled and...","description":"mm/shmem.c in the Linux kernel before 2.6.28-rc8, when strict overcommit is enabled and CONFIG_SECURITY is disabled, does not properly handle the export of shmemfs objects by knfsd, which allows attackers to cause a denial of service (NULL pointer dereference and knfsd crash) or possibly have unspecified other impact via unknown vectors.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-1643.","severity":{"version":"2.0","score":1.2,"vector":"AV:L/AC:H/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00335,"percentile":0.27038,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2010-06-03T14:00:00Z","modified":"2026-06-28T10:03:51Z","affected":[{"source":"osv","ecosystem":"Red Hat:enterprise_mrg:1::el5","package":"kernel-rt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.24.7-161.el5rt"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_mrg:1::el5","package":"kernel-rt-debug","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.24.7-161.el5rt"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_mrg:1::el5","package":"kernel-rt-debug-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.24.7-161.el5rt"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_mrg:1::el5","package":"kernel-rt-debug-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.24.7-161.el5rt"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_mrg:1::el5","package":"kernel-rt-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.24.7-161.el5rt"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_mrg:1::el5","package":"kernel-rt-debuginfo-common","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.24.7-161.el5rt"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_mrg:1::el5","package":"kernel-rt-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.24.7-161.el5rt"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_mrg:1::el5","package":"kernel-rt-doc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.24.7-161.el5rt"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_mrg:1::el5","package":"kernel-rt-firmware","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.24.7-161.el5rt"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_mrg:1::el5","package":"kernel-rt-trace","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.24.7-161.el5rt"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_mrg:1::el5","package":"kernel-rt-trace-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.24.7-161.el5rt"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_mrg:1::el5","package":"kernel-rt-trace-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.24.7-161.el5rt"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_mrg:1::el5","package":"kernel-rt-vanilla","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.24.7-161.el5rt"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_mrg:1::el5","package":"kernel-rt-vanilla-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.24.7-161.el5rt"}]}],"bundled":14},{"source":"osv","ecosystem":"Red Hat:enterprise_mrg:1::el5","package":"kernel-rt-vanilla-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:2.6.24.7-161.el5rt"}]}],"bundled":14}],"products":[{"vendor":"linux","product":"linux_kernel"}],"references":[{"url":"http://www.mandriva.com/security/advisories?name=MDVSA-2010:198","tags":["vendor-advisory","x_refsource_MANDRIVA","x_transferred"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=595970","tags":["x_refsource_CONFIRM","x_transferred","report"]},{"url":"http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.28/ChangeLog-2.6.28-rc8","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/59224","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2010/05/27/1","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=1b79cd04fab80be61dcd2732e2423aafde9a4c1c","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2008-7256","tags":["advisory"]},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1b79cd04fab80be61dcd2732e2423aafde9a4c1c"},{"url":"https://github.com/advisories/GHSA-w478-8x45-v99x"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2008-7256","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2010:0631","tags":["advisory"]},{"url":"https://access.redhat.com/security/updates/classification/#important","tags":["article"]},{"url":"http://www.redhat.com/docs/en-US/errata/RHSA-2010-0631/Kernel_Security_Update/index.html","tags":["article"]},{"url":"https://access.redhat.com/kb/docs/DOC-31052","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=547236","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=555671","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=562075","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=566624","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=567184","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=567813","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=569237","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=576018","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=582076","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=584645","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=585094","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=594630","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=601210","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=606611","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=608583","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=612028","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2010/rhsa-2010_0631.json","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2008-7256","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2008-7256","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2009-4138","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2009-4138","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-4138","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2010-1083","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2010-1083","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2010-1083","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2010-1084","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2010-1084","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2010-1084","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2010-1086","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2010-1086","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2010-1086","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2010-1087","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2010-1087","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2010-1087","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2010-1088","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2010-1088","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2010-1088","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2010-1162","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2010-1162","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2010-1162","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2010-1173","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2010-1173","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2010-1173","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2010-1437","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2010-1437","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2010-1437","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2010-1643","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2010-1643","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2010-1643","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2010-2240","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2010-2240","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2010-2240","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2010-2248","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2010-2248","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2010-2248","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2010-2521","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2010-2521","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2010-2521","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2008-7256","description":"mm/shmem.c in the Linux kernel before 2.6.28-rc8, when strict overcommit is enabled and CONFIG_SECURITY is disabled, does not properly handle the export of shmemfs objects by knfsd, which allows attackers to cause a denial of service (NULL pointer dereference and knfsd crash) or possibly have unspecified other impact via unknown vectors.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-1643.","status":"published","published":"2010-06-03T14:00:00Z","modified":"2024-08-07T11:56:14.578Z","updated_at":"2026-11-02T14:34:48.505097Z"}],"euvd":[{"id":"EUVD-2008-7212","description":"mm/shmem.c in the Linux kernel before 2.6.28-rc8, when strict overcommit is enabled and CONFIG_SECURITY is disabled, does not properly handle the export of shmemfs objects by knfsd, which allows attackers to cause a denial of service (NULL pointer dereference and knfsd crash) or possibly have unspecified other impact via unknown vectors.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-1643.","status":"published","published":"2010-06-03T14:00:00Z","modified":"2024-08-07T11:56:14Z","updated_at":"2026-11-03T01:38:32.679637Z"}],"ghsa":[{"id":"GHSA-w478-8x45-v99x","title":"mm/shmem.c in the Linux kernel before 2.6.28-rc8, when strict overcommit is enabled and...","description":"mm/shmem.c in the Linux kernel before 2.6.28-rc8, when strict overcommit is enabled and CONFIG_SECURITY is disabled, does not properly handle the export of shmemfs objects by knfsd, which allows attackers to cause a denial of service (NULL pointer dereference and knfsd crash) or possibly have unspecified other impact via unknown vectors.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-1643.","status":"published","published":"2022-05-17T02:09:11Z","modified":"2025-04-11T03:35:43Z","updated_at":"2026-11-02T15:01:05.37302Z"}],"nvd":[{"id":"CVE-2008-7256","description":"mm/shmem.c in the Linux kernel before 2.6.28-rc8, when strict overcommit is enabled and CONFIG_SECURITY is disabled, does not properly handle the export of shmemfs objects by knfsd, which allows attackers to cause a denial of service (NULL pointer dereference and knfsd crash) or possibly have unspecified other impact via unknown vectors.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-1643.","status":"published","published":"2010-06-03T14:30:01.46Z","modified":"2026-06-16T23:03:55.963Z","cvss":[{"version":"2.0","score":1.2,"vector":"AV:L/AC:H/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary"}],"updated_at":"2026-11-02T14:01:32.081314Z"}],"osv":[{"id":"BELL-CVE-2008-7256","title":"CVE-2008-7256 does not affect BellSoft software","status":"withdrawn","published":"2010-06-03T14:30:00Z","modified":"2026-01-28T07:22:04.085057Z","cvss":[{"version":"2.0","score":1.2,"vector":"AV:L/AC:H/Au:N/C:N/I:N/A:P","level":"low"}],"updated_at":"2026-11-02T15:28:12.886815Z"},{"id":"RHSA-2010:0631","title":"Red Hat Security Advisory: kernel-rt security and bug fix update","status":"published","published":"2024-09-13T06:47:28Z","modified":"2026-06-28T10:03:51Z","updated_at":"2026-11-02T15:53:01.003286Z"}]}}