CVE-2022-49921
published 2025-05-01CVE-2022-49921: In the Linux kernel, the following vulnerability has been resolved: net: sched: Fix use after free in red_enqueue() We can't use "skb" again after passing it…
PriorityP336high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.18%
7.9th percentile
In the Linux kernel, the following vulnerability has been resolved:
net: sched: Fix use after free in red_enqueue()
We can't use "skb" again after passing it to qdisc_enqueue(). This is
basically identical to commit 2f09707d0c97 ("sch_sfb: Also store skb
len before calling child enqueue").
Affected
25 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.0.8-1 (bookworm) | linux 6.0.8-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 4.4.163 < 4.5 | 4.5 |
| linux | linux | >= d7f4f332f082c4d4ba53582f902ed6b44fd6f45e < 795afe0b9bb6c915f0299a8e309936519be01619 | 795afe0b9bb6c915f0299a8e309936519be01619 |
| linux | linux | >= d7f4f332f082c4d4ba53582f902ed6b44fd6f45e < a238cdcf2bdc72207c74375fc8be13ee549ca9db | a238cdcf2bdc72207c74375fc8be13ee549ca9db |
| linux | linux | >= d7f4f332f082c4d4ba53582f902ed6b44fd6f45e < e877f8fa49fbccc63cb2df2e9179bddc695b825a | e877f8fa49fbccc63cb2df2e9179bddc695b825a |
| linux | linux | >= d7f4f332f082c4d4ba53582f902ed6b44fd6f45e < 52e0429471976785c155bfbf51d80990c6cd46e2 | 52e0429471976785c155bfbf51d80990c6cd46e2 |
| linux | linux | >= d7f4f332f082c4d4ba53582f902ed6b44fd6f45e < 5960b9081baca85cc7dcb14aec1de85999ea9d36 | 5960b9081baca85cc7dcb14aec1de85999ea9d36 |
| linux | linux | >= d7f4f332f082c4d4ba53582f902ed6b44fd6f45e < fc4b50adb400ee5ec527a04073174e8e73a139fa | fc4b50adb400ee5ec527a04073174e8e73a139fa |
| linux | linux | >= d7f4f332f082c4d4ba53582f902ed6b44fd6f45e < 170e5317042c302777ed6d59fdb84af9b0219d4e | 170e5317042c302777ed6d59fdb84af9b0219d4e |
| linux | linux | >= d7f4f332f082c4d4ba53582f902ed6b44fd6f45e < 8bdc2acd420c6f3dd1f1c78750ec989f02a1e2b9 | 8bdc2acd420c6f3dd1f1c78750ec989f02a1e2b9 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.158-1 | 5.10.158-1 |
| linux | linux_kernel | >= 0 < 6.0.8-1 | 6.0.8-1 |
| linux | linux_kernel | >= 0 < 6.0.8-1 | 6.0.8-1 |
| linux | linux_kernel | >= 0 < 6.0.8-1 | 6.0.8-1 |
| linux | linux_kernel | >= 4.10 < 4.14.299 | 4.14.299 |
| linux | linux_kernel | >= 4.15 < 4.19.265 | 4.19.265 |
| linux | linux_kernel | >= 4.20 < 5.4.224 | 5.4.224 |
| linux | linux_kernel | >= 4.4.163 < 4.5 | 4.5 |
| linux | linux_kernel | >= 4.7 < 4.9.333 | 4.9.333 |
| linux | linux_kernel | >= 5.11 < 5.15.78 | 5.15.78 |
| linux | linux_kernel | >= 5.16 < 6.0.8 | 6.0.8 |
| linux | linux_kernel | >= 5.5 < 5.10.154 | 5.10.154 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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Red Hat
kernel: net: sched: Fix use after free in red_enqueue()
vendor_redhat·2025-05-01·CVSS 7.8
CVE-2022-49921 [HIGH] CWE-681 kernel: net: sched: Fix use after free in red_enqueue()
kernel: net: sched: Fix use after free in red_enqueue()
In the Linux kernel, the following vulnerability has been resolved:
net: sched: Fix use after free in red_enqueue()
We can't use "skb" again after passing it to qdisc_enqueue(). This is
basically identical to commit 2f09707d0c97 ("sch_sfb: Also store skb
len before calling child enqueue").
Statement: The bug could happen only when qdisc with Random Early Detection (RED) packet scheduling algorithm being used. The security impact is limited.
Mitigation: To mitigate this issue, prevent module sch_red from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.
Package: kernel (Red Hat Enterprise Linux 10) - Not affected
Package: kernel (Red Ha
Debian
CVE-2022-49921: linux - In the Linux kernel, the following vulnerability has been resolved: net: sched:...
vendor_debian·2022·CVSS 7.8
CVE-2022-49921 [HIGH] CVE-2022-49921: linux - In the Linux kernel, the following vulnerability has been resolved: net: sched:...
In the Linux kernel, the following vulnerability has been resolved: net: sched: Fix use after free in red_enqueue() We can't use "skb" again after passing it to qdisc_enqueue(). This is basically identical to commit 2f09707d0c97 ("sch_sfb: Also store skb len before calling child enqueue").
Scope: local
bookworm: resolved (fixed in 6.0.8-1)
bullseye: resolved (fixed in 5.10.158-1)
forky: resolved (fixed in 6.0.8-1)
sid: resolved (fixed in 6.0.8-1)
trixie: resolved (fixed in 6.0.8-1)
OSV
CVE-2022-49921: In the Linux kernel, the following vulnerability has been resolved: net: sched: Fix use after free in red_enqueue() We can't use "skb" again after pas
osv·2025-05-01·CVSS 7.8
CVE-2022-49921 [HIGH] CVE-2022-49921: In the Linux kernel, the following vulnerability has been resolved: net: sched: Fix use after free in red_enqueue() We can't use "skb" again after pas
In the Linux kernel, the following vulnerability has been resolved: net: sched: Fix use after free in red_enqueue() We can't use "skb" again after passing it to qdisc_enqueue(). This is basically identical to commit 2f09707d0c97 ("sch_sfb: Also store skb len before calling child enqueue").
GHSA
GHSA-5gp6-334q-267g: In the Linux kernel, the following vulnerability has been resolved:
net: sched: Fix use after free in red_enqueue()
We can't use "skb" again after p
ghsa_unreviewed·2025-05-01
CVE-2022-49921 [HIGH] CWE-416 GHSA-5gp6-334q-267g: In the Linux kernel, the following vulnerability has been resolved:
net: sched: Fix use after free in red_enqueue()
We can't use "skb" again after p
In the Linux kernel, the following vulnerability has been resolved:
net: sched: Fix use after free in red_enqueue()
We can't use "skb" again after passing it to qdisc_enqueue(). This is
basically identical to commit 2f09707d0c97 ("sch_sfb: Also store skb
len before calling child enqueue").
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/170e5317042c302777ed6d59fdb84af9b0219d4ehttps://git.kernel.org/stable/c/52e0429471976785c155bfbf51d80990c6cd46e2https://git.kernel.org/stable/c/5960b9081baca85cc7dcb14aec1de85999ea9d36https://git.kernel.org/stable/c/795afe0b9bb6c915f0299a8e309936519be01619https://git.kernel.org/stable/c/8bdc2acd420c6f3dd1f1c78750ec989f02a1e2b9https://git.kernel.org/stable/c/a238cdcf2bdc72207c74375fc8be13ee549ca9dbhttps://git.kernel.org/stable/c/e877f8fa49fbccc63cb2df2e9179bddc695b825ahttps://git.kernel.org/stable/c/fc4b50adb400ee5ec527a04073174e8e73a139fa
2025-05-01
Published