{"id":"CVE-2025-37787","state":"PUBLISHED","title":"net: dsa: mv88e6xxx: avoid unregistering devlink regions which were never registered","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: mv88e6xxx: avoid unregistering devlink regions which were never registered\n\nRussell King reports that a system with mv88e6xxx dereferences a NULL\npointer when unbinding this driver:\nhttps://lore.kernel.org/netdev/Z_lRkMlTJ1KQ0kVX@shell.armlinux.org.uk/\n\nThe crash seems to be in devlink_region_destroy(), which is not NULL\ntolerant but is given a NULL devlink global region pointer.\n\nAt least on some chips, some devlink regions are conditionally registered\nsince the blamed commit, see mv88e6xxx_setup_devlink_regions_global():\n\n\t\tif (cond && !cond(chip))\n\t\t\tcontinue;\n\nThese are MV88E6XXX_REGION_STU and MV88E6XXX_REGION_PVT. If the chip\ndoes not have an STU or PVT, it should crash like this.\n\nTo fix the issue, avoid unregistering those regions which are NULL, i.e.\nwere skipped at mv88e6xxx_setup_devlink_regions_global() time.","publishedAt":"2025-05-01T13:07:21.593Z","updatedAt":"2026-05-11T21:15:10.202Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"836021a2d0e0e4c90b895a35bd9c0342071855fb","status":"affected","lessThan":"8ccdf5e24b276848eefb2755e05ff0f005a0c4a1","versionType":"git"},{"version":"836021a2d0e0e4c90b895a35bd9c0342071855fb","status":"affected","lessThan":"b3c70dfe51f10df60db2646c08cebd24bcdc5247","versionType":"git"},{"version":"836021a2d0e0e4c90b895a35bd9c0342071855fb","status":"affected","lessThan":"bbb80f004f7a90c3dcaacc982c59967457254a05","versionType":"git"},{"version":"836021a2d0e0e4c90b895a35bd9c0342071855fb","status":"affected","lessThan":"3665695e3572239dc233216f06b41f40cc771889","versionType":"git"},{"version":"836021a2d0e0e4c90b895a35bd9c0342071855fb","status":"affected","lessThan":"5f5e95945bb1e08be7655da6acba648274db457d","versionType":"git"},{"version":"836021a2d0e0e4c90b895a35bd9c0342071855fb","status":"affected","lessThan":"c84f6ce918a9e6f4996597cbc62536bbf2247c96","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/dsa/mv88e6xxx/devlink.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.13","versionType":"semver"},{"version":"5.15.181","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.135","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.88","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.25","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.14.4","status":"unaffected","lessThanOrEqual":"6.14.*","versionType":"semver"},{"version":"6.15","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/dsa/mv88e6xxx/devlink.c"]}],"references":["https://git.kernel.org/stable/c/8ccdf5e24b276848eefb2755e05ff0f005a0c4a1","https://git.kernel.org/stable/c/b3c70dfe51f10df60db2646c08cebd24bcdc5247","https://git.kernel.org/stable/c/bbb80f004f7a90c3dcaacc982c59967457254a05","https://git.kernel.org/stable/c/3665695e3572239dc233216f06b41f40cc771889","https://git.kernel.org/stable/c/5f5e95945bb1e08be7655da6acba648274db457d","https://git.kernel.org/stable/c/c84f6ce918a9e6f4996597cbc62536bbf2247c96","https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:03.054Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/37xxx/CVE-2025-37787.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-37787","state":"PUBLISHED","datePublished":"2025-05-01T13:07:21.593Z","dateUpdated":"2026-05-11T21:15:10.202Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-04-16T04:51:23.940Z"},"containers":{"cna":{"title":"net: dsa: mv88e6xxx: avoid unregistering devlink regions which were never registered","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: mv88e6xxx: avoid unregistering devlink regions which were never registered\n\nRussell King reports that a system with mv88e6xxx dereferences a NULL\npointer when unbinding this driver:\nhttps://lore.kernel.org/netdev/Z_lRkMlTJ1KQ0kVX@shell.armlinux.org.uk/\n\nThe crash seems to be in devlink_region_destroy(), which is not NULL\ntolerant but is given a NULL devlink global region pointer.\n\nAt least on some chips, some devlink regions are conditionally registered\nsince the blamed commit, see mv88e6xxx_setup_devlink_regions_global():\n\n\t\tif (cond && !cond(chip))\n\t\t\tcontinue;\n\nThese are MV88E6XXX_REGION_STU and MV88E6XXX_REGION_PVT. If the chip\ndoes not have an STU or PVT, it should crash like this.\n\nTo fix the issue, avoid unregistering those regions which are NULL, i.e.\nwere skipped at mv88e6xxx_setup_devlink_regions_global() time."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"836021a2d0e0e4c90b895a35bd9c0342071855fb","status":"affected","lessThan":"8ccdf5e24b276848eefb2755e05ff0f005a0c4a1","versionType":"git"},{"version":"836021a2d0e0e4c90b895a35bd9c0342071855fb","status":"affected","lessThan":"b3c70dfe51f10df60db2646c08cebd24bcdc5247","versionType":"git"},{"version":"836021a2d0e0e4c90b895a35bd9c0342071855fb","status":"affected","lessThan":"bbb80f004f7a90c3dcaacc982c59967457254a05","versionType":"git"},{"version":"836021a2d0e0e4c90b895a35bd9c0342071855fb","status":"affected","lessThan":"3665695e3572239dc233216f06b41f40cc771889","versionType":"git"},{"version":"836021a2d0e0e4c90b895a35bd9c0342071855fb","status":"affected","lessThan":"5f5e95945bb1e08be7655da6acba648274db457d","versionType":"git"},{"version":"836021a2d0e0e4c90b895a35bd9c0342071855fb","status":"affected","lessThan":"c84f6ce918a9e6f4996597cbc62536bbf2247c96","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/dsa/mv88e6xxx/devlink.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.13","versionType":"semver"},{"version":"5.15.181","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.135","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.88","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.25","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.14.4","status":"unaffected","lessThanOrEqual":"6.14.*","versionType":"semver"},{"version":"6.15","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/dsa/mv88e6xxx/devlink.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8ccdf5e24b276848eefb2755e05ff0f005a0c4a1"},{"url":"https://git.kernel.org/stable/c/b3c70dfe51f10df60db2646c08cebd24bcdc5247"},{"url":"https://git.kernel.org/stable/c/bbb80f004f7a90c3dcaacc982c59967457254a05"},{"url":"https://git.kernel.org/stable/c/3665695e3572239dc233216f06b41f40cc771889"},{"url":"https://git.kernel.org/stable/c/5f5e95945bb1e08be7655da6acba648274db457d"},{"url":"https://git.kernel.org/stable/c/c84f6ce918a9e6f4996597cbc62536bbf2247c96"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:15:10.202Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"5.15.181"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.1.135"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.6.88"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.12.25"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.14.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.15"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-11-03T19:55:09.237Z"}}]}}}