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CVE-2022-49378 (GCVE-0-2022-49378)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:11 – Updated: 2026-05-11 18:58
VLAI
Title
sfc: fix considering that all channels have TX queues
Summary
In the Linux kernel, the following vulnerability has been resolved: sfc: fix considering that all channels have TX queues Normally, all channels have RX and TX queues, but this is not true if modparam efx_separate_tx_channels=1 is used. In that cases, some channels only have RX queues and others only TX queues (or more preciselly, they have them allocated, but not initialized). Fix efx_channel_has_tx_queues to return the correct value for this case too. Messages shown at probe time before the fix: sfc 0000:03:00.0 ens6f0np0: MC command 0x82 inlen 544 failed rc=-22 (raw=0) arg=0 ------------[ cut here ]------------ netdevice: ens6f0np0: failed to initialise TXQ -1 WARNING: CPU: 1 PID: 626 at drivers/net/ethernet/sfc/ef10.c:2393 efx_ef10_tx_init+0x201/0x300 [sfc] [...] stripped RIP: 0010:efx_ef10_tx_init+0x201/0x300 [sfc] [...] stripped Call Trace: efx_init_tx_queue+0xaa/0xf0 [sfc] efx_start_channels+0x49/0x120 [sfc] efx_start_all+0x1f8/0x430 [sfc] efx_net_open+0x5a/0xe0 [sfc] __dev_open+0xd0/0x190 __dev_change_flags+0x1b3/0x220 dev_change_flags+0x21/0x60 [...] stripped Messages shown at remove time before the fix: sfc 0000:03:00.0 ens6f0np0: failed to flush 10 queues sfc 0000:03:00.0 ens6f0np0: failed to flush queues
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8700aff089843399f95bc7701ae87b642b35a716 , < 8f81a4113e1e574d2cbde4f2cd599380a9189c0f (git)
Affected: 8700aff089843399f95bc7701ae87b642b35a716 , < 5567d69b95b9c07e1c56f15cf0301251d12e5f97 (git)
Affected: 8700aff089843399f95bc7701ae87b642b35a716 , < e7e8d5e25dc762b70f9c88ec6b7d451d0816eead (git)
Affected: 8700aff089843399f95bc7701ae87b642b35a716 , < 913d45f02d346ce41c4aad057eaf53a8ed449dc3 (git)
Affected: 8700aff089843399f95bc7701ae87b642b35a716 , < 2e102b53f8a778f872dc137f4c7ac548705817aa (git)
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Linux Linux Affected: 5.5
Unaffected: 0 , < 5.5 (semver)
Unaffected: 5.10.122 , ≤ 5.10.* (semver)
Unaffected: 5.15.47 , ≤ 5.15.* (semver)
Unaffected: 5.17.15 , ≤ 5.17.* (semver)
Unaffected: 5.18.4 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
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            "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"
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            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: sfc: correcci\u00f3n considerando que todos los canales tienen colas TX Normalmente, todos los canales tienen colas RX y TX, pero esto no es cierto si se usa el modparam efx_separate_tx_channels=1. En esos casos, algunos canales solo tienen colas RX y otros solo colas TX (o m\u00e1s precisamente, las tienen asignadas, pero no inicializadas). Arregla efx_channel_has_tx_queues para que devuelva el valor correcto para este caso tambi\u00e9n. Mensajes mostrados en el momento de la prueba antes de la correcci\u00f3n: sfc 0000:03:00.0 ens6f0np0: Fall\u00f3 el comando MC 0x82 inlen 544 rc=-22 (raw=0) arg=0 ------------[ cortar aqu\u00ed ]------------  netdevice: ens6f0np0: failed to initialise TXQ -1 WARNING: CPU: 1 PID: 626 at drivers/net/ethernet/sfc/ef10.c:2393 efx_ef10_tx_init+0x201/0x300 [sfc] [...] stripped RIP: 0010:efx_ef10_tx_init+0x201/0x300 [sfc] [...] stripped Call Trace: efx_init_tx_queue+0xaa/0xf0 [sfc] efx_start_channels+0x49/0x120 [sfc] efx_start_all+0x1f8/0x430 [sfc] efx_net_open+0x5a/0xe0 [sfc] __dev_open+0xd0/0x190 __dev_change_flags+0x1b3/0x220 dev_change_flags+0x21/0x60 [...] stripped Messages shown at remove time before the fix: sfc 0000:03:00.0 ens6f0np0: failed to flush 10 queues sfc 0000:03:00.0 ens6f0np0: failed to flush queues "
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        "id": "CVE-2022-49378",
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      "cve": "CVE-2022-49378",
      "id": "CVE-2022-49378",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "286",
      "product_status:known_affected": "66",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: sfc: fix considering that all channels have TX queues",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49378.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-16T00:27:20Z",
      "cve": "CVE-2022-49378",
      "id": "CVE-2022-49378",
      "initial_release_date": "2025-02-27T03:07:54Z",
      "product_status:known_affected": "403",
      "product_status:known_not_affected": "332",
      "product_status:recommended": "265",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49378",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49378.json",
      "version": "52"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.