{"id":"CVE-2026-45849","state":"PUBLISHED","title":"net: mscc: ocelot: add missing lock protection in ocelot_port_xmit_inj()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mscc: ocelot: add missing lock protection in ocelot_port_xmit_inj()\n\nocelot_port_xmit_inj() calls ocelot_can_inject() and\nocelot_port_inject_frame() without holding the injection group lock.\nBoth functions contain lockdep_assert_held() for the injection lock,\nand the correct caller felix_port_deferred_xmit() properly acquires\nthe lock using ocelot_lock_inj_grp() before calling these functions.\n\nAdd ocelot_lock_inj_grp()/ocelot_unlock_inj_grp() around the register\ninjection path to fix the missing lock protection. The FDMA path is not\naffected as it uses its own locking mechanism.","publishedAt":"2026-05-27T12:15:15.494Z","updatedAt":"2026-05-27T12:15:15.494Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"960ec92774e152b677ccd0006abcab7b9dd814c2","status":"affected","lessThan":"0b217a40156f497e09dd20d3f7baec40c785f386","versionType":"git"},{"version":"e83b49ecb569c9c5fa7cc30e55cf2c15f71f9f39","status":"affected","lessThan":"cc1b179f778f98270bdbbb48d183b4b6427ae198","versionType":"git"},{"version":"c5e12ac3beb0dd3a718296b2d8af5528e9ab728e","status":"affected","lessThan":"7ac58d8832802ec89baa7539e13e6d58a88cce04","versionType":"git"},{"version":"c5e12ac3beb0dd3a718296b2d8af5528e9ab728e","status":"affected","lessThan":"51c32ae7fae14552d79f7139614b77c1bbd57a48","versionType":"git"},{"version":"c5e12ac3beb0dd3a718296b2d8af5528e9ab728e","status":"affected","lessThan":"63da961381e0d979459dede713001f8452364477","versionType":"git"},{"version":"c5e12ac3beb0dd3a718296b2d8af5528e9ab728e","status":"affected","lessThan":"026f6513c5880c2c89e38ad66bbec2868f978605","versionType":"git"},{"version":"609cd73bf38bbd48f1e695e01802114b01aa8811","status":"affected","versionType":"git"},{"version":"6.1.107","status":"affected","lessThan":"6.1.165","versionType":"semver"},{"version":"6.6.48","status":"affected","lessThan":"6.6.128","versionType":"semver"},{"version":"6.10.7","status":"affected","lessThan":"6.11","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mscc/ocelot_net.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.11","versionType":"semver"},{"version":"6.1.165","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.14","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.4","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mscc/ocelot_net.c"]}],"references":["https://git.kernel.org/stable/c/0b217a40156f497e09dd20d3f7baec40c785f386","https://git.kernel.org/stable/c/cc1b179f778f98270bdbbb48d183b4b6427ae198","https://git.kernel.org/stable/c/7ac58d8832802ec89baa7539e13e6d58a88cce04","https://git.kernel.org/stable/c/51c32ae7fae14552d79f7139614b77c1bbd57a48","https://git.kernel.org/stable/c/63da961381e0d979459dede713001f8452364477","https://git.kernel.org/stable/c/026f6513c5880c2c89e38ad66bbec2868f978605"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45849.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45849","state":"PUBLISHED","datePublished":"2026-05-27T12:15:15.494Z","dateUpdated":"2026-05-27T12:15:15.494Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.078Z"},"containers":{"cna":{"title":"net: mscc: ocelot: add missing lock protection in ocelot_port_xmit_inj()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mscc: ocelot: add missing lock protection in ocelot_port_xmit_inj()\n\nocelot_port_xmit_inj() calls ocelot_can_inject() and\nocelot_port_inject_frame() without holding the injection group lock.\nBoth functions contain lockdep_assert_held() for the injection lock,\nand the correct caller felix_port_deferred_xmit() properly acquires\nthe lock using ocelot_lock_inj_grp() before calling these functions.\n\nAdd ocelot_lock_inj_grp()/ocelot_unlock_inj_grp() around the register\ninjection path to fix the missing lock protection. The FDMA path is not\naffected as it uses its own locking mechanism."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"960ec92774e152b677ccd0006abcab7b9dd814c2","status":"affected","lessThan":"0b217a40156f497e09dd20d3f7baec40c785f386","versionType":"git"},{"version":"e83b49ecb569c9c5fa7cc30e55cf2c15f71f9f39","status":"affected","lessThan":"cc1b179f778f98270bdbbb48d183b4b6427ae198","versionType":"git"},{"version":"c5e12ac3beb0dd3a718296b2d8af5528e9ab728e","status":"affected","lessThan":"7ac58d8832802ec89baa7539e13e6d58a88cce04","versionType":"git"},{"version":"c5e12ac3beb0dd3a718296b2d8af5528e9ab728e","status":"affected","lessThan":"51c32ae7fae14552d79f7139614b77c1bbd57a48","versionType":"git"},{"version":"c5e12ac3beb0dd3a718296b2d8af5528e9ab728e","status":"affected","lessThan":"63da961381e0d979459dede713001f8452364477","versionType":"git"},{"version":"c5e12ac3beb0dd3a718296b2d8af5528e9ab728e","status":"affected","lessThan":"026f6513c5880c2c89e38ad66bbec2868f978605","versionType":"git"},{"version":"609cd73bf38bbd48f1e695e01802114b01aa8811","status":"affected","versionType":"git"},{"version":"6.1.107","status":"affected","lessThan":"6.1.165","versionType":"semver"},{"version":"6.6.48","status":"affected","lessThan":"6.6.128","versionType":"semver"},{"version":"6.10.7","status":"affected","lessThan":"6.11","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mscc/ocelot_net.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.11","versionType":"semver"},{"version":"6.1.165","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.14","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.4","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mscc/ocelot_net.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/0b217a40156f497e09dd20d3f7baec40c785f386"},{"url":"https://git.kernel.org/stable/c/cc1b179f778f98270bdbbb48d183b4b6427ae198"},{"url":"https://git.kernel.org/stable/c/7ac58d8832802ec89baa7539e13e6d58a88cce04"},{"url":"https://git.kernel.org/stable/c/51c32ae7fae14552d79f7139614b77c1bbd57a48"},{"url":"https://git.kernel.org/stable/c/63da961381e0d979459dede713001f8452364477"},{"url":"https://git.kernel.org/stable/c/026f6513c5880c2c89e38ad66bbec2868f978605"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-27T12:15:15.494Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.107","versionEndExcluding":"6.1.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.48","versionEndExcluding":"6.6.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"6.18.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"6.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"7.0"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.10.7"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}