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CVE-2025-21996

drm/radeon: fix uninitialized size issue in radeon_vce_cs_parse() PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: drm/radeon: fix uninitialized size issue in radeon_vce_cs_parse() On the off chance that command stream passed from userspace via ioctl() call to radeon_vce_cs_parse() is weirdly crafted and first command to execute is to encode (case 0x03000001), the function in question will attempt to call radeon_vce_cs_reloc() with size argument that has not been properly initialized. Specifically, 'size' will point to 'tmp' variable before the latter had a chance to be assigned any value. Play it safe and init 'tmp' with 0, thus ensuring that radeon_vce_cs_reloc() will catch an early error in cases like these. Found by Linux Verification Center (linuxtesting.org) with static analysis tool SVACE. (cherry picked from commit 2d52de55f9ee7aaee0e09ac443f77855989c6b68)

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 2fc5703abda201f138faf63bdca743d04dbf4b1a before 0effb378ebce52b897f85cd7f828854b8c7cb636; affected 2fc5703abda201f138faf63bdca743d04dbf4b1a before 5b4d9d20fd455a97920cf158dd19163b879cf65d; affected 2fc5703abda201f138faf63bdca743d04dbf4b1a before 9b2da9c673a0da1359a2151f7ce773e2f77d71a9; affected 2fc5703abda201f138faf63bdca743d04dbf4b1a before 78b07dada3f02f77762d0755a96d35f53b02be69; affected 2fc5703abda201f138faf63bdca743d04dbf4b1a before 3ce08215cad55c10a6eeeb33d3583b6cfffe3ab8; affected 2fc5703abda201f138faf63bdca743d04dbf4b1a before dd1801aa01bba1760357f2a641346ae149686713; affected 2fc5703abda201f138faf63bdca743d04dbf4b1a before f5e049028124f755283f2c07e7a3708361ed1dc8; affected 2fc5703abda201f138faf63bdca743d04dbf4b1a before dd8689b52a24807c2d5ce0a17cb26dc87f75235c
Linux / Linuxaffected 3.15; unaffected 0 before 3.15; unaffected 5.4.292 through 5.4.*; unaffected 5.10.236 through 5.10.*; unaffected 5.15.180 through 5.15.*; unaffected 6.1.132 through 6.1.*; unaffected 6.6.85 through 6.6.*; unaffected 6.12.21 through 6.12.*; unaffected 6.13.9 through 6.13.*; unaffected 6.14 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.