How severe is CVE-2022-49112?

CVE-2022-49112 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2022-49112 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-49112?

CVE-2022-49112 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-49112?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2022-49112 have an EU (EUVD) identifier?

Yes. CVE-2022-49112 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-54490.

When was CVE-2022-49112 published?

CVE-2022-49112 was published on 2025-02-26 and last updated on 2026-06-17.

CVE-2022-49112

CVE-2022-49112 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2022-54490
Affected product: Linux Linux Kernel
Published: 2025-02-26
Last modified: 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: mt76: fix monitor mode crash with sdio driver mt7921s driver may receive frames with fragment buffers. If there is a CTS packet received in monitor mode, the payload is 10 bytes only and need 6 bytes header padding after RXD buffer. However, only RXD in the first linear buffer, if we pull buffer size RXD-size+6 bytes with skb_pull(), that would trigger "BUG_ON(skb->len < skb->data_len)" in __skb_pull(). To avoid the nonlinear buffer issue, enlarge the RXD size from 128 to 256 to make sure all MCU operation in linear buffer. [ 52.007562] kernel BUG at include/linux/skbuff.h:2313! [ 52.007578] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP [ 52.007987] pc : skb_pull+0x48/0x4c [ 52.008015] lr : mt7921_queue_rx_skb+0x494/0x890 [mt7921_common] [ 52.008361] Call trace: [ 52.008377] skb_pull+0x48/0x4c [ 52.008400] mt76s_net_worker+0x134/0x1b0 [mt76_sdio 35339a92c6eb7d4bbcc806a1d22f56365565135c] [ 52.008431] __mt76_worker_fn+0xe8/0x170 [mt76 ef716597d11a77150bc07e3fdd68eeb0f9b56917] [ 52.008449] kthread+0x148/0x3ac [ 52.008466] ret_from_fork+0x10/0x30

Frequently asked questions

What is CVE-2022-49112?: In the Linux kernel, the following vulnerability has been resolved: mt76: fix monitor mode crash with sdio driver mt7921s driver may receive frames with fragment buffers. If there is a CTS packet received in monitor mode, the payload is 10 bytes only and need 6 bytes header padding after RXD buffer. However, only RXD in the first linear buffer, if we pull buffer size RXD-size+6 bytes with skb_pull(), that would trigger "BUG_ON(skb->len < skb->data_len)" in __skb_pull(). To avoid the nonlinear buffer issue, enlarge the RXD size from 128 to 256 to make sure all MCU operation in linear buffer. [ 52.007562] kernel BUG at include/linux/skbuff.h:2313! [ 52.007578] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP [ 52.007987] pc : skb_pull+0x48/0x4c [ 52.008015] lr : mt7921_queue_rx_skb+0x494/0x890 [mt7921_common] [ 52.008361] Call trace: [ 52.008377] skb_pull+0x48/0x4c [ 52.008400] mt76s_net_worker+0x134/0x1b0 [mt76_sdio 35339a92c6eb7d4bbcc806a1d22f56365565135c] [ 52.008431] __mt76_worker_fn+0xe8/0x170 [mt76 ef716597d11a77150bc07e3fdd68eeb0f9b56917] [ 52.008449] kthread+0x148/0x3ac [ 52.008466] ret_from_fork+0x10/0x30
How severe is CVE-2022-49112?: CVE-2022-49112 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2022-49112 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-49112?: CVE-2022-49112 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-49112?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2022-49112 have an EU (EUVD) identifier?: Yes. CVE-2022-49112 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-54490.
When was CVE-2022-49112 published?: CVE-2022-49112 was published on 2025-02-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

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