CVE-2023-52628
In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: exthdr: fix 4-byte stack OOB write If priv->len is a multiple of 4, then dst[len / 4] can write past the destination array which leads to stack corruption.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.68%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: exthdr: fix 4-byte stack OOB write If priv->len is a multiple of 4, then dst[len / 4] can write past the destination array which leads to stack corruption. This construct is necessary to clean the remainder of the register in case ->len is NOT a multiple of the register size, so make it conditional just like nft_payload.c does. The bug was added in 4.1 cycle and then copied/inherited when tcp/sctp and ip option support was added. Bug reported by Zero Day Initiative project (ZDI-CAN-21950, ZDI-CAN-21951, ZDI-CAN-21961).
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 0.68% probability · 50th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/1ad7b189cc1411048434e8595ffcbe7873b71082Patch
- https://git.kernel.org/stable/c/28a97c43c9e32f437ebb8d6126f9bb7f3ca9521aPatch
- https://git.kernel.org/stable/c/a7d86a77c33ba1c357a7504341172cc1507f0698Patch
- https://git.kernel.org/stable/c/c8f292322ff16b9a2272a67de396c09a50e09dcePatch
- https://git.kernel.org/stable/c/cf39c4f77a773a547ac2bcf30ecdd303bb0c80cbPatch
- https://git.kernel.org/stable/c/d9ebfc0f21377690837ebbd119e679243e0099ccPatch
- https://git.kernel.org/stable/c/fd94d9dadee58e09b49075240fe83423eb1dcd36Patch
- https://git.kernel.org/stable/c/1ad7b189cc1411048434e8595ffcbe7873b71082Patch
- https://git.kernel.org/stable/c/28a97c43c9e32f437ebb8d6126f9bb7f3ca9521aPatch
- https://git.kernel.org/stable/c/a7d86a77c33ba1c357a7504341172cc1507f0698Patch
- https://git.kernel.org/stable/c/c8f292322ff16b9a2272a67de396c09a50e09dcePatch
- https://git.kernel.org/stable/c/cf39c4f77a773a547ac2bcf30ecdd303bb0c80cbPatch
- https://git.kernel.org/stable/c/d9ebfc0f21377690837ebbd119e679243e0099ccPatch
- https://git.kernel.org/stable/c/fd94d9dadee58e09b49075240fe83423eb1dcd36Patch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.