{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-39873","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-04-16T07:20:57.144Z","datePublished":"2025-09-23T06:00:46.157Z","dateUpdated":"2026-05-11T21:38:04.818Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:38:04.818Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncan: xilinx_can: xcan_write_frame(): fix use-after-free of transmitted SKB\n\ncan_put_echo_skb() takes ownership of the SKB and it may be freed\nduring or after the call.\n\nHowever, xilinx_can xcan_write_frame() keeps using SKB after the call.\n\nFix that by only calling can_put_echo_skb() after the code is done\ntouching the SKB.\n\nThe tx_lock is held for the entire xcan_write_frame() execution and\nalso on the can_get_echo_skb() side so the order of operations does not\nmatter.\n\nAn earlier fix commit 3d3c817c3a40 (\"can: xilinx_can: Fix usage of skb\nmemory\") did not move the can_put_echo_skb() call far enough.\n\n[mkl: add \"commit\" in front of sha1 in patch description]\n[mkl: fix indention]"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/can/xilinx_can.c"],"versions":[{"version":"1598efe57b3e768056e4ca56cb9cf33111e68d1c","lessThan":"e202ffd9e54538ef67ec301ebd6d9da4823466c9","status":"affected","versionType":"git"},{"version":"1598efe57b3e768056e4ca56cb9cf33111e68d1c","lessThan":"1139321161a3ba5e45e61e0738b37f42f20bc57a","status":"affected","versionType":"git"},{"version":"1598efe57b3e768056e4ca56cb9cf33111e68d1c","lessThan":"94b050726288a56a6b8ff55aa641f2fedbd3b44c","status":"affected","versionType":"git"},{"version":"1598efe57b3e768056e4ca56cb9cf33111e68d1c","lessThan":"725b33deebd6e4c96fe7893f384510a54258f28f","status":"affected","versionType":"git"},{"version":"1598efe57b3e768056e4ca56cb9cf33111e68d1c","lessThan":"668cc1e3bb21101d074e430de1b7ba8fd10189e7","status":"affected","versionType":"git"},{"version":"1598efe57b3e768056e4ca56cb9cf33111e68d1c","lessThan":"ef79f00be72bd81d2e1e6f060d83cf7e425deee4","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/can/xilinx_can.c"],"versions":[{"version":"4.19","status":"affected"},{"version":"0","lessThan":"4.19","status":"unaffected","versionType":"semver"},{"version":"5.15.194","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.153","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.107","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.48","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.16.8","lessThanOrEqual":"6.16.*","status":"unaffected","versionType":"semver"},{"version":"6.17","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.15.194"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.1.153"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.6.107"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.12.48"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.16.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.17"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/e202ffd9e54538ef67ec301ebd6d9da4823466c9"},{"url":"https://git.kernel.org/stable/c/1139321161a3ba5e45e61e0738b37f42f20bc57a"},{"url":"https://git.kernel.org/stable/c/94b050726288a56a6b8ff55aa641f2fedbd3b44c"},{"url":"https://git.kernel.org/stable/c/725b33deebd6e4c96fe7893f384510a54258f28f"},{"url":"https://git.kernel.org/stable/c/668cc1e3bb21101d074e430de1b7ba8fd10189e7"},{"url":"https://git.kernel.org/stable/c/ef79f00be72bd81d2e1e6f060d83cf7e425deee4"}],"title":"can: xilinx_can: xcan_write_frame(): fix use-after-free of transmitted SKB","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-03T17:44:20.103Z"}}]}}