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CVE-2026-117557

SDL_image through 3.4.8 and 2.8.12 Stack Out-of-Bounds Read in ILBM Loader

6.9 Medium

SDL_image through 3.4.8 and through 2.8.12 contains a stack out-of-bounds read vulnerability in IMG_LoadLBM_IO() in src/IMG_lbm.c that skips bitplane count validation when HAM mode is set. Attackers can supply a crafted ILBM file with more than 8 HAM bitplanes to read past the colormap stack array, causing crashes or disclosing stack memory.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Passive

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
High

Exploit likelihood

0.13%Unchanged since Oct 28, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.9

SDL_image through 3.4.8 and 2.8.12 Stack Out-of-Bounds Read in ILBM Loader

SDL_image through 3.4.8 and through 2.8.12 contains a stack out-of-bounds read vulnerability in IMG_LoadLBM_IO() in src/IMG_lbm.c that skips bitplane count validation when HAM mode is set. Attackers can supply a crafted ILBM file with more than 8 HAM bitplanes to read past the colormap stack array, causing crashes or disclosing stack memory.

Record
CVE-2026-117557
CVSS 4.0
6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
6.1 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Weakness
CWE-125
Updated
2026-11-04
EUVDEUVD-2026-110835 6.9

SDL_image through 3.4.8 and through 2.8.12 contains a stack out-of-bounds read vulnerability in IMG_LoadLBM_IO() in src/IMG_lbm.c that skips bitplane count validation when HAM mode is set. Attackers can supply a crafted ILBM file with more than 8 HAM bitplanes to read past the colormap stack array, causing crashes or disclosing stack memory.

Record
EUVD-2026-110835
CVSS 4.0
6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Updated
2026-11-04
GitHub AdvisoriesGHSA-m3v7-j67w-q2pr 6.9

SDL_image through 3.4.8 and through 2.8.12 contains a stack out-of-bounds read vulnerability in...

SDL_image through 3.4.8 and through 2.8.12 contains a stack out-of-bounds read vulnerability in IMG_LoadLBM_IO() in src/IMG_lbm.c that skips bitplane count validation when HAM mode is set. Attackers can supply a crafted ILBM file with more than 8 HAM bitplanes to read past the colormap stack array, causing crashes or disclosing stack memory.

Record
GHSA-m3v7-j67w-q2pr
CVSS 4.0
6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/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
CVSS 3.1
6.1 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Weakness
CWE-125
Updated
2026-11-04
NVD 6.9

SDL_image through 3.4.8 and through 2.8.12 contains a stack out-of-bounds read vulnerability in IMG_LoadLBM_IO() in src/IMG_lbm.c that skips bitplane count validation when HAM mode is set. Attackers can supply a crafted ILBM file with more than 8 HAM bitplanes to read past the colormap stack array, causing crashes or disclosing stack memory.

Record
CVE-2026-117557
CVSS 4.0
6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/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
CVSS 3.1
6.1 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Weakness
CWE-125
Updated
2026-11-04
OSV 6.9

SDL_image through 3.4.8 and 2.8.12 Stack Out-of-Bounds Read in ILBM Loader

SDL_image through 3.4.8 and through 2.8.12 contains a stack out-of-bounds read vulnerability in IMG_LoadLBM_IO() in src/IMG_lbm.c that skips bitplane count validation when HAM mode is set. Attackers can supply a crafted ILBM file with more than 8 HAM bitplanes to read past the colormap stack array, causing crashes or disclosing stack memory.

Record
CVE-2026-117557
CVSS 4.0
6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness
CWE-125
Updated
2026-11-06
OSVDEBIAN-CVE-2026-117557 6.9

SDL_image through 3.4.8 and through 2.8.12 contains a stack out-of-bounds read vulnerability in IMG_LoadLBM_IO() in src/IMG_lbm.c that skips bitplane count validation when HAM mode is set. Attackers can supply a crafted ILBM file with more than 8 HAM bitplanes to read past the colormap stack array, causing crashes or disclosing stack memory.

Record
DEBIAN-CVE-2026-117557
CVSS 4.0
6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/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
Updated
2026-11-05
OSVUBUNTU-CVE-2026-117557 6.9

SDL_image through 3.4.8 and through 2.8.12 contains a stack out-of-bounds read vulnerability in IMG_LoadLBM_IO() in src/IMG_lbm.c that skips bitplane count validation when HAM mode is set. Attackers can supply a crafted ILBM file with more than 8 HAM bitplanes to read past the colormap stack array, causing crashes or disclosing stack memory.

Record
UBUNTU-CVE-2026-117557
CVSS 4.0
6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
6.1 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
libsdl2-image
Debian:12
 All versions, plus listed versions
2.6.3+dfsg-12.6.3+dfsg-22.8.0+dfsg-12.8.1+dfsg-12.8.10+dfsg-1
Show 9 moreShow less
2.8.12+dfsg-12.8.12+dfsg-22.8.2+dfsg-12.8.4+dfsg-12.8.5+dfsg-12.8.6+dfsg-12.8.6+dfsg-22.8.8+dfsg-12.8.8+dfsg-2
 None known
libsdl2-image
Debian:13
 All versions, plus listed versions
2.8.10+dfsg-12.8.12+dfsg-12.8.12+dfsg-22.8.8+dfsg-12.8.8+dfsg-1+deb13u12.8.8+dfsg-2
 None known
libsdl2-image
Debian:14
 All versions, plus listed versions
2.8.10+dfsg-12.8.12+dfsg-12.8.12+dfsg-22.8.8+dfsg-12.8.8+dfsg-2
 None known
libsdl3-image
Debian:13
 All versions, plus listed versions
3.2.4+ds-13.2.4+ds-1+deb13u13.2.6+ds-13.3.4+ds-13.3.4+ds-2
Show 6 moreShow less
3.4.0+ds-13.4.2+ds-13.4.4+ds-13.4.4+ds-23.4.6+ds-13.4.8+ds-1
 None known
libsdl3-image
Debian:14
 All versions, plus listed versions
3.2.4+ds-13.2.6+ds-13.3.4+ds-13.3.4+ds-23.4.0+ds-1
Show 5 moreShow less
3.4.2+ds-13.4.4+ds-13.4.4+ds-23.4.6+ds-13.4.8+ds-1
 None known
sdl-image1.2
Debian:12
 All versions, plus listed versions
1.2.12-131.2.12-14
 None known
sdl-image1.2
Debian:13
 All versions, plus listed versions
1.2.12-14
 None known
sdl-image1.2
Debian:14
 All versions, plus listed versions
1.2.12-14
 None known
libsdl2-image
Ubuntu:Pro:14.04:LTS
 All versions, plus listed versions
2.0.0+dfsg-22.0.0+dfsg-32.0.0+dfsg-3build22.0.0+dfsg-3+deb8u1build0.14.04.12.0.0+dfsg-3+deb8u2build0.14.04.1~esm1
 None known
libsdl2-image
Ubuntu:16.04:LTS
 All versions, plus listed versions
2.0.0+dfsg-3build22.0.1+dfsg-12.0.1+dfsg-22.0.1+dfsg-2+deb9u1build0.16.04.1
 None known
Show 8 moreShow less
Affected packages
PackageAffectedFixed
libsdl2-image
Ubuntu:18.04:LTS
 All versions, plus listed versions
2.0.1+dfsg-32.0.1+dfsg-42.0.2+dfsg1-12.0.3+dfsg1-1
 None known
libsdl2-image
Ubuntu:20.04:LTS
 All versions, plus listed versions
2.0.5+dfsg1-12.0.5+dfsg1-2
 None known
libsdl2-image
Ubuntu:22.04:LTS
 All versions, plus listed versions
2.0.5+dfsg1-22.0.5+dfsg1-32.0.5+dfsg1-3build1
 None known
libsdl2-image
Ubuntu:24.04:LTS
 All versions, plus listed versions
2.6.3+dfsg-22.8.0+dfsg-12.8.1+dfsg-12.8.2+dfsg-12.8.2+dfsg-1build12.8.2+dfsg-1build2
 None known
libsdl2-image
Ubuntu:26.10
 All versions, plus listed versions
2.8.8+dfsg-22.8.12+dfsg-12.8.12+dfsg-2
 None known
libsdl3-image
Ubuntu:26.10
 All versions, plus listed versions
3.4.0+ds-13.4.4+ds-13.4.4+ds-2
 None known
libsdl2-image
Ubuntu:26.04:LTS
 All versions, plus listed versions
2.8.8+dfsg-12.8.8+dfsg-2
 None known
libsdl3-image
Ubuntu:26.04:LTS
 All versions, plus listed versions
3.2.4+ds-13.4.0+ds-1
 None known

History

History
RecordedChangedSources
referencesEUVD, GitHub Advisories, NVD, OSV
facts, referencesCVE List
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-117557 is a medium vulnerability (CVSS 6.9) in Libsdl-org Sdl Image, published October 27, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.13%, the 2nd percentile. No source names a fixed version.

References

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