CVE-2026-89818
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
drm/amdgpu/vcn: fix integer overflow in dec_msg buffer count check
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: fix integer overflow in dec_msg buffer count check If the supplied msg[2] (num_buffers) is 0x3FFFFFFF, the expression 6 + num_buffers * 4 wraps to 2 and the bounds check passes, letting the parser loop far past the end of the message BO. Triggering it additionally requires a ~4GiB mapping so that msg[1] survives the earlier "header does not fit in BO" check. Rewrite the test in division form, which is overflow-free by construction. Also update the message to reflect that msg is invalid.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 88411caee8f576d6b5abf6531232fcc0ce756dc5 | affected | git | c2340281be4ddacb8c203e2bce59b126d1d6c4c8 | Unavailable | None listed |
| c72a8b4dc6d598e3831ef3abd9c6527dfbf4810e | affected | git | 6dceaeceaa7c8396339f3ea34b0110cb912ca61b | Unavailable | None listed |
| 7688143ca62edeecacb3ba0a2cea129dbd262a18 | affected | git | 47799e1f893d47d8af231710a61065e3ec8a13e8 | Unavailable | None listed |
| 63b51e8a9d54317d31cc3856c1e12407070d5fc2 | affected | git | 7e28853c78c20bb8ba4c1dba702430cd05e09f76 | Unavailable | None listed |
| b193019860d61e92da395eae2011f2f6716b182f | affected | git | 9ae19bd60891bea0a7b7504cc8dbfe74570ac3b3 | Unavailable | None listed |
| b193019860d61e92da395eae2011f2f6716b182f | affected | git | 4d7390530853eb7befda9cc786e4c86e8ad7ac9e | Unavailable | None listed |
| f55552adb100eb54a6e6dabff4fbdc8679bd3fa0 | affected | git | Unavailable | Unavailable | None listed |
| 82c535eff05490c71153af57de9fe85502fcb5d5 | affected | git | Unavailable | Unavailable | None listed |
| 638d3e0b9eb77aa53fdd60e2b928761d16ba76fa | affected | git | Unavailable | Unavailable | None listed |
| 870c8738c3774336baedddd0240951d078a703b8 | affected | git | Unavailable | Unavailable | None listed |
| 638e48ee39d0f2af9336f917a6f5d6692dd64d93 | affected | git | Unavailable | Unavailable | None listed |
| e382e0b81a3e7bd21504fee1d01ae8b08f84d3a7 | affected | git | Unavailable | Unavailable | None listed |
| 3c817a60b09eaab926e475088e750936efcc95ae | affected | git | Unavailable | Unavailable | None listed |
| 6.1.175 | affected | semver | 6.1.188 | Unavailable | None listed |
| 6.6.140 | affected | semver | 6.6.157 | Unavailable | None listed |
| 6.12.90 | affected | semver | 6.12.110 | Unavailable | None listed |
| 6.18.32 | affected | semver | 6.18.51 | Unavailable | None listed |
| 5.15.209 | affected | semver | 5.16 | Unavailable | None listed |
| 7.0.9 | affected | semver | 7.1 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 7.1 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 7.1 | Unavailable | None listed |
| 6.1.188 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.157 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.110 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.51 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.5 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |