CVE-2022-49378
sfc: fix considering that all channels have TX queues
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
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
Timeline
ID reserved
By Linux
Published
- 15 months later
· 15 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.27% · top 81% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 8700aff089843399f95bc7701ae87b642b35a716 – < 8f81a4113e1e574d2cbde4f2cd599380a9189c0f
- affected 8700aff089843399f95bc7701ae87b642b35a716 – < 5567d69b95b9c07e1c56f15cf0301251d12e5f97
- affected 8700aff089843399f95bc7701ae87b642b35a716 – < e7e8d5e25dc762b70f9c88ec6b7d451d0816eead
- affected 8700aff089843399f95bc7701ae87b642b35a716 – < 913d45f02d346ce41c4aad057eaf53a8ed449dc3
- affected 8700aff089843399f95bc7701ae87b642b35a716 – < 2e102b53f8a778f872dc137f4c7ac548705817aa
- affected 5.5
- unaffected < 5.5
- unaffected 5.10.122 – ≤ 5.10.*
- unaffected 5.15.47 – ≤ 5.15.*
- unaffected 5.17.15 – ≤ 5.17.*
- unaffected 5.18.4 – ≤ 5.18.*
- unaffected 5.19 – ≤ *
References (5)
- https://git.kernel.org/stable/c/8f81a4113e1e574d2cbde4f2cd599380a9189c0f (opens in a new tab)
- https://git.kernel.org/stable/c/5567d69b95b9c07e1c56f15cf0301251d12e5f97 (opens in a new tab)
- https://git.kernel.org/stable/c/e7e8d5e25dc762b70f9c88ec6b7d451d0816eead (opens in a new tab)
- https://git.kernel.org/stable/c/913d45f02d346ce41c4aad057eaf53a8ed449dc3 (opens in a new tab)
- https://git.kernel.org/stable/c/2e102b53f8a778f872dc137f4c7ac548705817aa (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-49378)Record last updated .