{"id":"CVE-2022-49378","state":"PUBLISHED","title":"sfc: fix considering that all channels have TX queues","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsfc: fix considering that all channels have TX queues\n\nNormally, all channels have RX and TX queues, but this is not true if\nmodparam efx_separate_tx_channels=1 is used. In that cases, some\nchannels only have RX queues and others only TX queues (or more\npreciselly, they have them allocated, but not initialized).\n\nFix efx_channel_has_tx_queues to return the correct value for this case\ntoo.\n\nMessages shown at probe time before the fix:\n sfc 0000:03:00.0 ens6f0np0: MC command 0x82 inlen 544 failed rc=-22 (raw=0) arg=0\n ------------[ cut here ]------------\n netdevice: ens6f0np0: failed to initialise TXQ -1\n WARNING: CPU: 1 PID: 626 at drivers/net/ethernet/sfc/ef10.c:2393 efx_ef10_tx_init+0x201/0x300 [sfc]\n [...] stripped\n RIP: 0010:efx_ef10_tx_init+0x201/0x300 [sfc]\n [...] stripped\n Call Trace:\n  efx_init_tx_queue+0xaa/0xf0 [sfc]\n  efx_start_channels+0x49/0x120 [sfc]\n  efx_start_all+0x1f8/0x430 [sfc]\n  efx_net_open+0x5a/0xe0 [sfc]\n  __dev_open+0xd0/0x190\n  __dev_change_flags+0x1b3/0x220\n  dev_change_flags+0x21/0x60\n [...] stripped\n\nMessages shown at remove time before the fix:\n sfc 0000:03:00.0 ens6f0np0: failed to flush 10 queues\n sfc 0000:03:00.0 ens6f0np0: failed to flush queues","publishedAt":"2025-02-26T02:11:17.084Z","updatedAt":"2026-05-11T18:58:32.136Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8700aff089843399f95bc7701ae87b642b35a716","status":"affected","lessThan":"8f81a4113e1e574d2cbde4f2cd599380a9189c0f","versionType":"git"},{"version":"8700aff089843399f95bc7701ae87b642b35a716","status":"affected","lessThan":"5567d69b95b9c07e1c56f15cf0301251d12e5f97","versionType":"git"},{"version":"8700aff089843399f95bc7701ae87b642b35a716","status":"affected","lessThan":"e7e8d5e25dc762b70f9c88ec6b7d451d0816eead","versionType":"git"},{"version":"8700aff089843399f95bc7701ae87b642b35a716","status":"affected","lessThan":"913d45f02d346ce41c4aad057eaf53a8ed449dc3","versionType":"git"},{"version":"8700aff089843399f95bc7701ae87b642b35a716","status":"affected","lessThan":"2e102b53f8a778f872dc137f4c7ac548705817aa","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/sfc/net_driver.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.5","versionType":"semver"},{"version":"5.10.122","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.47","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.17.15","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18.4","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","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/sfc/net_driver.h"]}],"references":["https://git.kernel.org/stable/c/8f81a4113e1e574d2cbde4f2cd599380a9189c0f","https://git.kernel.org/stable/c/5567d69b95b9c07e1c56f15cf0301251d12e5f97","https://git.kernel.org/stable/c/e7e8d5e25dc762b70f9c88ec6b7d451d0816eead","https://git.kernel.org/stable/c/913d45f02d346ce41c4aad057eaf53a8ed449dc3","https://git.kernel.org/stable/c/2e102b53f8a778f872dc137f4c7ac548705817aa"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/49xxx/CVE-2022-49378.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-49378","state":"PUBLISHED","datePublished":"2025-02-26T02:11:17.084Z","dateUpdated":"2026-05-11T18:58:32.136Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-02-26T02:08:31.558Z"},"containers":{"cna":{"title":"sfc: fix considering that all channels have TX queues","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsfc: fix considering that all channels have TX queues\n\nNormally, all channels have RX and TX queues, but this is not true if\nmodparam efx_separate_tx_channels=1 is used. In that cases, some\nchannels only have RX queues and others only TX queues (or more\npreciselly, they have them allocated, but not initialized).\n\nFix efx_channel_has_tx_queues to return the correct value for this case\ntoo.\n\nMessages shown at probe time before the fix:\n sfc 0000:03:00.0 ens6f0np0: MC command 0x82 inlen 544 failed rc=-22 (raw=0) arg=0\n ------------[ cut here ]------------\n netdevice: ens6f0np0: failed to initialise TXQ -1\n WARNING: CPU: 1 PID: 626 at drivers/net/ethernet/sfc/ef10.c:2393 efx_ef10_tx_init+0x201/0x300 [sfc]\n [...] stripped\n RIP: 0010:efx_ef10_tx_init+0x201/0x300 [sfc]\n [...] stripped\n Call Trace:\n  efx_init_tx_queue+0xaa/0xf0 [sfc]\n  efx_start_channels+0x49/0x120 [sfc]\n  efx_start_all+0x1f8/0x430 [sfc]\n  efx_net_open+0x5a/0xe0 [sfc]\n  __dev_open+0xd0/0x190\n  __dev_change_flags+0x1b3/0x220\n  dev_change_flags+0x21/0x60\n [...] stripped\n\nMessages shown at remove time before the fix:\n sfc 0000:03:00.0 ens6f0np0: failed to flush 10 queues\n sfc 0000:03:00.0 ens6f0np0: failed to flush queues"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8700aff089843399f95bc7701ae87b642b35a716","status":"affected","lessThan":"8f81a4113e1e574d2cbde4f2cd599380a9189c0f","versionType":"git"},{"version":"8700aff089843399f95bc7701ae87b642b35a716","status":"affected","lessThan":"5567d69b95b9c07e1c56f15cf0301251d12e5f97","versionType":"git"},{"version":"8700aff089843399f95bc7701ae87b642b35a716","status":"affected","lessThan":"e7e8d5e25dc762b70f9c88ec6b7d451d0816eead","versionType":"git"},{"version":"8700aff089843399f95bc7701ae87b642b35a716","status":"affected","lessThan":"913d45f02d346ce41c4aad057eaf53a8ed449dc3","versionType":"git"},{"version":"8700aff089843399f95bc7701ae87b642b35a716","status":"affected","lessThan":"2e102b53f8a778f872dc137f4c7ac548705817aa","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/sfc/net_driver.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.5","versionType":"semver"},{"version":"5.10.122","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.47","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"5.17.15","status":"unaffected","lessThanOrEqual":"5.17.*","versionType":"semver"},{"version":"5.18.4","status":"unaffected","lessThanOrEqual":"5.18.*","versionType":"semver"},{"version":"5.19","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/sfc/net_driver.h"]}],"references":[{"url":"https://git.kernel.org/stable/c/8f81a4113e1e574d2cbde4f2cd599380a9189c0f"},{"url":"https://git.kernel.org/stable/c/5567d69b95b9c07e1c56f15cf0301251d12e5f97"},{"url":"https://git.kernel.org/stable/c/e7e8d5e25dc762b70f9c88ec6b7d451d0816eead"},{"url":"https://git.kernel.org/stable/c/913d45f02d346ce41c4aad057eaf53a8ed449dc3"},{"url":"https://git.kernel.org/stable/c/2e102b53f8a778f872dc137f4c7ac548705817aa"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T18:58:32.136Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.122"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.15.47"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.17.15"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.18.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}