{"id":"CVE-2025-21996","state":"PUBLISHED","title":"drm/radeon: fix uninitialized size issue in radeon_vce_cs_parse()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/radeon: fix uninitialized size issue in radeon_vce_cs_parse()\n\nOn the off chance that command stream passed from userspace via\nioctl() call to radeon_vce_cs_parse() is weirdly crafted and\nfirst command to execute is to encode (case 0x03000001), the function\nin question will attempt to call radeon_vce_cs_reloc() with size\nargument that has not been properly initialized. Specifically, 'size'\nwill point to 'tmp' variable before the latter had a chance to be\nassigned any value.\n\nPlay it safe and init 'tmp' with 0, thus ensuring that\nradeon_vce_cs_reloc() will catch an early error in cases like these.\n\nFound by Linux Verification Center (linuxtesting.org) with static\nanalysis tool SVACE.\n\n(cherry picked from commit 2d52de55f9ee7aaee0e09ac443f77855989c6b68)","publishedAt":"2025-04-03T07:18:59.933Z","updatedAt":"2026-05-11T21:10:37.545Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2fc5703abda201f138faf63bdca743d04dbf4b1a","status":"affected","lessThan":"0effb378ebce52b897f85cd7f828854b8c7cb636","versionType":"git"},{"version":"2fc5703abda201f138faf63bdca743d04dbf4b1a","status":"affected","lessThan":"5b4d9d20fd455a97920cf158dd19163b879cf65d","versionType":"git"},{"version":"2fc5703abda201f138faf63bdca743d04dbf4b1a","status":"affected","lessThan":"9b2da9c673a0da1359a2151f7ce773e2f77d71a9","versionType":"git"},{"version":"2fc5703abda201f138faf63bdca743d04dbf4b1a","status":"affected","lessThan":"78b07dada3f02f77762d0755a96d35f53b02be69","versionType":"git"},{"version":"2fc5703abda201f138faf63bdca743d04dbf4b1a","status":"affected","lessThan":"3ce08215cad55c10a6eeeb33d3583b6cfffe3ab8","versionType":"git"},{"version":"2fc5703abda201f138faf63bdca743d04dbf4b1a","status":"affected","lessThan":"dd1801aa01bba1760357f2a641346ae149686713","versionType":"git"},{"version":"2fc5703abda201f138faf63bdca743d04dbf4b1a","status":"affected","lessThan":"f5e049028124f755283f2c07e7a3708361ed1dc8","versionType":"git"},{"version":"2fc5703abda201f138faf63bdca743d04dbf4b1a","status":"affected","lessThan":"dd8689b52a24807c2d5ce0a17cb26dc87f75235c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/radeon/radeon_vce.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.15","versionType":"semver"},{"version":"5.4.292","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.236","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.180","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.132","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.85","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.21","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13.9","status":"unaffected","lessThanOrEqual":"6.13.*","versionType":"semver"},{"version":"6.14","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/radeon/radeon_vce.c"]}],"references":["https://git.kernel.org/stable/c/0effb378ebce52b897f85cd7f828854b8c7cb636","https://git.kernel.org/stable/c/5b4d9d20fd455a97920cf158dd19163b879cf65d","https://git.kernel.org/stable/c/9b2da9c673a0da1359a2151f7ce773e2f77d71a9","https://git.kernel.org/stable/c/78b07dada3f02f77762d0755a96d35f53b02be69","https://git.kernel.org/stable/c/3ce08215cad55c10a6eeeb33d3583b6cfffe3ab8","https://git.kernel.org/stable/c/dd1801aa01bba1760357f2a641346ae149686713","https://git.kernel.org/stable/c/f5e049028124f755283f2c07e7a3708361ed1dc8","https://git.kernel.org/stable/c/dd8689b52a24807c2d5ce0a17cb26dc87f75235c","https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html","https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"],"weaknesses":["CWE-908"],"ingestedAt":"2026-10-29T20:08:39.238Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/21xxx/CVE-2025-21996.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-21996","state":"PUBLISHED","datePublished":"2025-04-03T07:18:59.933Z","dateUpdated":"2026-05-11T21:10:37.545Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-12-29T08:45:45.801Z"},"containers":{"cna":{"title":"drm/radeon: fix uninitialized size issue in radeon_vce_cs_parse()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/radeon: fix uninitialized size issue in radeon_vce_cs_parse()\n\nOn the off chance that command stream passed from userspace via\nioctl() call to radeon_vce_cs_parse() is weirdly crafted and\nfirst command to execute is to encode (case 0x03000001), the function\nin question will attempt to call radeon_vce_cs_reloc() with size\nargument that has not been properly initialized. Specifically, 'size'\nwill point to 'tmp' variable before the latter had a chance to be\nassigned any value.\n\nPlay it safe and init 'tmp' with 0, thus ensuring that\nradeon_vce_cs_reloc() will catch an early error in cases like these.\n\nFound by Linux Verification Center (linuxtesting.org) with static\nanalysis tool SVACE.\n\n(cherry picked from commit 2d52de55f9ee7aaee0e09ac443f77855989c6b68)"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2fc5703abda201f138faf63bdca743d04dbf4b1a","status":"affected","lessThan":"0effb378ebce52b897f85cd7f828854b8c7cb636","versionType":"git"},{"version":"2fc5703abda201f138faf63bdca743d04dbf4b1a","status":"affected","lessThan":"5b4d9d20fd455a97920cf158dd19163b879cf65d","versionType":"git"},{"version":"2fc5703abda201f138faf63bdca743d04dbf4b1a","status":"affected","lessThan":"9b2da9c673a0da1359a2151f7ce773e2f77d71a9","versionType":"git"},{"version":"2fc5703abda201f138faf63bdca743d04dbf4b1a","status":"affected","lessThan":"78b07dada3f02f77762d0755a96d35f53b02be69","versionType":"git"},{"version":"2fc5703abda201f138faf63bdca743d04dbf4b1a","status":"affected","lessThan":"3ce08215cad55c10a6eeeb33d3583b6cfffe3ab8","versionType":"git"},{"version":"2fc5703abda201f138faf63bdca743d04dbf4b1a","status":"affected","lessThan":"dd1801aa01bba1760357f2a641346ae149686713","versionType":"git"},{"version":"2fc5703abda201f138faf63bdca743d04dbf4b1a","status":"affected","lessThan":"f5e049028124f755283f2c07e7a3708361ed1dc8","versionType":"git"},{"version":"2fc5703abda201f138faf63bdca743d04dbf4b1a","status":"affected","lessThan":"dd8689b52a24807c2d5ce0a17cb26dc87f75235c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/radeon/radeon_vce.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.15","versionType":"semver"},{"version":"5.4.292","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.236","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.180","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.132","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.85","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.21","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.13.9","status":"unaffected","lessThanOrEqual":"6.13.*","versionType":"semver"},{"version":"6.14","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/radeon/radeon_vce.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/0effb378ebce52b897f85cd7f828854b8c7cb636"},{"url":"https://git.kernel.org/stable/c/5b4d9d20fd455a97920cf158dd19163b879cf65d"},{"url":"https://git.kernel.org/stable/c/9b2da9c673a0da1359a2151f7ce773e2f77d71a9"},{"url":"https://git.kernel.org/stable/c/78b07dada3f02f77762d0755a96d35f53b02be69"},{"url":"https://git.kernel.org/stable/c/3ce08215cad55c10a6eeeb33d3583b6cfffe3ab8"},{"url":"https://git.kernel.org/stable/c/dd1801aa01bba1760357f2a641346ae149686713"},{"url":"https://git.kernel.org/stable/c/f5e049028124f755283f2c07e7a3708361ed1dc8"},{"url":"https://git.kernel.org/stable/c/dd8689b52a24807c2d5ce0a17cb26dc87f75235c"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:10:37.545Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"5.4.292"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"5.10.236"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"5.15.180"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"6.1.132"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"6.6.85"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"6.12.21"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"6.13.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"6.14"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-10-01T18:15:07.384970Z","id":"CVE-2025-21996","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-908","type":"CWE","lang":"en","description":"CWE-908 Use of Uninitialized Resource"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-01T18:15:11.775Z"}},{"title":"CVE Program 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