{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2022-49625","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-02-26T02:21:30.421Z","datePublished":"2025-02-26T02:23:40.786Z","dateUpdated":"2025-05-04T08:42:04.336Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T08:42:04.336Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsfc: fix kernel panic when creating VF\n\nWhen creating VFs a kernel panic can happen when calling to\nefx_ef10_try_update_nic_stats_vf.\n\nWhen releasing a DMA coherent buffer, sometimes, I don't know in what\nspecific circumstances, it has to unmap memory with vunmap. It is\ndisallowed to do that in IRQ context or with BH disabled. Otherwise, we\nhit this line in vunmap, causing the crash:\n  BUG_ON(in_interrupt());\n\nThis patch reenables BH to release the buffer.\n\nLog messages when the bug is hit:\n kernel BUG at mm/vmalloc.c:2727!\n invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\n CPU: 6 PID: 1462 Comm: NetworkManager Kdump: loaded Tainted: G          I      --------- ---  5.14.0-119.el9.x86_64 #1\n Hardware name: Dell Inc. PowerEdge R740/06WXJT, BIOS 2.8.2 08/27/2020\n RIP: 0010:vunmap+0x2e/0x30\n ...skip...\n Call Trace:\n  __iommu_dma_free+0x96/0x100\n  efx_nic_free_buffer+0x2b/0x40 [sfc]\n  efx_ef10_try_update_nic_stats_vf+0x14a/0x1c0 [sfc]\n  efx_ef10_update_stats_vf+0x18/0x40 [sfc]\n  efx_start_all+0x15e/0x1d0 [sfc]\n  efx_net_open+0x5a/0xe0 [sfc]\n  __dev_open+0xe7/0x1a0\n  __dev_change_flags+0x1d7/0x240\n  dev_change_flags+0x21/0x60\n  ...skip..."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/sfc/ef10.c"],"versions":[{"version":"d778819609a27efd5358da8151a0ad3507243e19","lessThan":"d9840212a9c00507347c703f4fdeda16400407e0","status":"affected","versionType":"git"},{"version":"d778819609a27efd5358da8151a0ad3507243e19","lessThan":"b9072305270579a9d6afc9b926166231e5b1a7c8","status":"affected","versionType":"git"},{"version":"d778819609a27efd5358da8151a0ad3507243e19","lessThan":"82bcb730f856086f033e6c04082eb4503d4c2fa4","status":"affected","versionType":"git"},{"version":"d778819609a27efd5358da8151a0ad3507243e19","lessThan":"da346adcf5573fd8663cabfdfe8371009629a906","status":"affected","versionType":"git"},{"version":"d778819609a27efd5358da8151a0ad3507243e19","lessThan":"b82e4ad58a7fb72456503958a93060f87896e629","status":"affected","versionType":"git"},{"version":"d778819609a27efd5358da8151a0ad3507243e19","lessThan":"68e5f32f0de9594629ff9e599294d9801c6187de","status":"affected","versionType":"git"},{"version":"d778819609a27efd5358da8151a0ad3507243e19","lessThan":"16662524ec5da801fb78a1afcaf6e782f1cf103a","status":"affected","versionType":"git"},{"version":"d778819609a27efd5358da8151a0ad3507243e19","lessThan":"ada74c5539eba06cf8b47d068f92e0b3963a9a6e","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/ethernet/sfc/ef10.c"],"versions":[{"version":"4.2","status":"affected"},{"version":"0","lessThan":"4.2","status":"unaffected","versionType":"semver"},{"version":"4.9.324","lessThanOrEqual":"4.9.*","status":"unaffected","versionType":"semver"},{"version":"4.14.289","lessThanOrEqual":"4.14.*","status":"unaffected","versionType":"semver"},{"version":"4.19.253","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.207","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.132","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.56","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"5.18.13","lessThanOrEqual":"5.18.*","status":"unaffected","versionType":"semver"},{"version":"5.19","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":"4.2","versionEndExcluding":"4.9.324"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"4.14.289"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"4.19.253"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.4.207"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.10.132"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.15.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.18.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.19"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/d9840212a9c00507347c703f4fdeda16400407e0"},{"url":"https://git.kernel.org/stable/c/b9072305270579a9d6afc9b926166231e5b1a7c8"},{"url":"https://git.kernel.org/stable/c/82bcb730f856086f033e6c04082eb4503d4c2fa4"},{"url":"https://git.kernel.org/stable/c/da346adcf5573fd8663cabfdfe8371009629a906"},{"url":"https://git.kernel.org/stable/c/b82e4ad58a7fb72456503958a93060f87896e629"},{"url":"https://git.kernel.org/stable/c/68e5f32f0de9594629ff9e599294d9801c6187de"},{"url":"https://git.kernel.org/stable/c/16662524ec5da801fb78a1afcaf6e782f1cf103a"},{"url":"https://git.kernel.org/stable/c/ada74c5539eba06cf8b47d068f92e0b3963a9a6e"}],"title":"sfc: fix kernel panic when creating VF","x_generator":{"engine":"bippy-1.2.0"}}}}