sfc: fix considering that all channels have TX queues
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 5 fixed, 3 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
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
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 5.5 and later | 5.10.122, 5.15.47, 5.17.15, 5.18.4, 5.19 | Patch available | CNA |
- Linux VendorLinux Affected 5.5 and later Fixed in 5.10.122, 5.15.47, 5.17.15, 5.18.4, 5.19 Patch available CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.5.1 to before 5.10.122; 5.11 to before 5.15.47; 5.16 to before 5.17.15; 5.18 to before 5.18.4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.5:-:*:*:*:*:*:* | 5.5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.5:rc3:*:*:*:*:*:* | 5.5 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.5:rc4:*:*:*:*:*:* | 5.5 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.5:rc5:*:*:*:*:*:* | 5.5 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.5:rc6:*:*:*:*:*:* | 5.5 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.5:rc7:*:*:*:*:*:* | 5.5 rc7 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.5.1 to before 5.10.122; 5.11 to before 5.15.47; 5.16 to before 5.17.15; 5.18 to before 5.18.4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.5:-:*:*:*:*:*:* Versions 5.5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.5:rc3:*:*:*:*:*:* Versions 5.5 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.5:rc4:*:*:*:*:*:* Versions 5.5 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.5:rc5:*:*:*:*:*:* Versions 5.5 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.5:rc6:*:*:*:*:*:* Versions 5.5 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.5:rc7:*:*:*:*:*:* Versions 5.5 rc7 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.122, 5.15.47, 5.17.15, 5.18.4, 5.19
Red Hat 2 advisories
- RHSA-2022:8267 Released 2022-11-15 · Red Hat rating Moderatekernel security, bug fix, and enhancement update
- Red Hat CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-162.6.1.el9_1
- Red Hat Enterprise Linux AppStream (v. 9) kernel-debug-devel-5.14.0-162.6.1.el9_1, kernel-debug-devel-matched-5.14.0-162.6.1.el9_1, kernel-devel-5.14.0-162.6.1.el9_1 +5
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-5.14.0-162.6.1.el9_1, kernel-5.14.0-162.6.1.el9_1, kernel-abi-stablelists-5.14.0-162.6.1.el9_1 +14
- RHSA-2022:7683 Released 2022-11-08 · Red Hat rating Moderatekernel security, bug fix, and enhancement update
- Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-425.3.1.el8
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-425.3.1.el8, kernel-4.18.0-425.3.1.el8, kernel-abi-stablelists-4.18.0-425.3.1.el8 +19
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat CodeReady Linux Builder (v. 8) | Fixed | RHSA-2022:7683 |
| Red Hat CodeReady Linux Builder (v. 9) | Fixed | RHSA-2022:8267 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2022:8267 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2022:7683 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2022:8267 |
Not affected: 2 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2022-49378
- 2026-10-03 Alias added: GHSA-6gpm-qxpm-qmwf
References
Patch 5
- 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
More Linux Kernel vulnerabilities
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- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2022-49378 · CVE Program
- CVE-2022-49378 · NVD
- FIRST EPSS
- GHSA-6gpm-qxpm-qmwf · GitHub Advisory Database · CC BY 4.0
- CVE-2022-49378 · Red Hat security data · CC BY 4.0
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