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CVE-2023-2640

Status Candidate

Overview

On Ubuntu kernels carrying both c914c0e27eb0 and "UBUNTU: SAUCE: overlayfs: Skip permission checking for trusted.overlayfs.* xattrs", an unprivileged user may set privileged extended attributes on the mounted files, leading them to be set on the upper files without the appropriate security checks.

Related Files

Ubuntu Security Notice USN-6285-1
Posted Aug 14, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6285-1 - It was discovered that the NTFS file system implementation in the Linux kernel did not properly check buffer indexes in certain situations, leading to an out-of-bounds read vulnerability. A local attacker could possibly use this to expose sensitive information. Stonejiajia, Shir Tamari and Sagi Tzadik discovered that the OverlayFS implementation in the Ubuntu Linux kernel did not properly perform permission checks in certain situations. A local attacker could possibly use this to gain elevated privileges.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-48502, CVE-2023-2640, CVE-2023-2898, CVE-2023-31248, CVE-2023-32629, CVE-2023-3390, CVE-2023-35001, CVE-2023-3609, CVE-2023-3610, CVE-2023-3611, CVE-2023-3776, CVE-2023-38430, CVE-2023-38432, CVE-2023-3863
SHA-256 | c7303f43ba77d16cc931ee8b1c0d2f16d00a561cedb386fa837bfed417cd59f3
Ubuntu Security Notice USN-6260-1
Posted Jul 27, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6260-1 - It was discovered that the NTFS file system implementation in the Linux kernel did not properly check buffer indexes in certain situations, leading to an out-of-bounds read vulnerability. A local attacker could possibly use this to expose sensitive information. Stonejiajia, Shir Tamari and Sagi Tzadik discovered that the OverlayFS implementation in the Ubuntu Linux kernel did not properly perform permission checks in certain situations. A local attacker could possibly use this to gain elevated privileges.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-48502, CVE-2023-2640, CVE-2023-3090, CVE-2023-31248, CVE-2023-3141, CVE-2023-32629, CVE-2023-3389, CVE-2023-3390, CVE-2023-35001
SHA-256 | a4384a0d58c965d16d9a12fe71bc79afb9b36f12a4660d6419a9dae8338f976a
Ubuntu Security Notice USN-6250-1
Posted Jul 26, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6250-1 - Stonejiajia, Shir Tamari and Sagi Tzadik discovered that the OverlayFS implementation in the Ubuntu Linux kernel did not properly perform permission checks in certain situations. A local attacker could possibly use this to gain elevated privileges. It was discovered that the IP-VLAN network driver for the Linux kernel did not properly initialize memory in some situations, leading to an out-of- bounds write vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-2640, CVE-2023-3090, CVE-2023-31248, CVE-2023-32629, CVE-2023-3269, CVE-2023-3389, CVE-2023-3390, CVE-2023-35001
SHA-256 | a3c2bee7fb44adf555ec4f0c4513eec063216c00e3541ec88c1729871be7fb50
Ubuntu Security Notice USN-6248-1
Posted Jul 26, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6248-1 - It was discovered that the network queuing discipline implementation in the Linux kernel contained a null pointer dereference in some situations. A local attacker could use this to cause a denial of service. It was discovered that a race condition existed in Adreno GPU DRM driver in the Linux kernel, leading to a double-free vulnerability. A local attacker could use this to cause a denial of service.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2022-47929, CVE-2023-21106, CVE-2023-2640, CVE-2023-31248, CVE-2023-32629, CVE-2023-3389, CVE-2023-35001
SHA-256 | b8f3da6963dc1b1e3cc8907b151d7eea0916cee6b2d4a566e0162f800b0fab21
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