CVE-2024-53066: linux Use of Uninitialized Resource
Vulnerability summary
CVE-2024-53066 is a critical (CVSS 9.8) Use of Uninitialized Resource vulnerability in linux. EPSS estimates a 0.66% chance of exploitation in the next 30 days, higher than 50.6% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 60 · Related 58Timeline
- 19-11-2024PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: nfs: Fix KMSAN warning in decode_getfattr_attrs() Fix the following KMSAN warning: CPU: 1 UID: 0 PID: 7651 Comm: cp Tainted: G B Tainted: [B]=BAD_PAGE Hardware name: QEMU Standard PC (Q35 + ICH9, 2009) ===================================================== ===================================================== BUG: KMSAN: uninit-value in decode_getfattr_attrs+0x2d6d/0x2f90 decode_getfattr_attrs+0x2d6d/0x2f90 decode_getfattr_generic+0x806/0xb00 nfs4_xdr_dec_getattr+0x1de/0x240 rpcauth_unwrap_resp_decode+0xab/0x100 rpcauth_unwrap_resp+0x95/0xc0 call_decode+0x4ff/0xb50 __rpc_execute+0x57b/0x19d0 rpc_execute+0x368/0x5e0 rpc_run_task+0xcfe/0xee0 nfs4_proc_getattr+0x5b5/0x990 __nfs_revalidate_inode+0x477/0xd00 nfs_access_get_cached+0x1021/0x1cc0 nfs_do_access+0x9f/0xae0 nfs_permission+0x1e4/0x8c0 inode_permission+0x356/0x6c0 link_path_walk+0x958/0x1330 path_lookupat+0xce/0x6b0 filename_lookup+0x23e/0x770 vfs_statx+0xe7/0x970 vfs_fstatat+0x1f2/0x2c0 __se_sys_newfstatat+0x67/0x880 __x64_sys_newfstatat+0xbd/0x120 x64_sys_call+0x1826/0x3cf0 do_syscall_64+0xd0/0x1b0 entry_SYSCALL_64_after_hwframe+0x77/0x7f The KMSAN warning is triggered in decode_getfattr_attrs(), when calling decode_attr_mdsthreshold(). It appears that fattr->mdsthreshold is not initialized. Fix the issue by initializing fattr->mdsthreshold to NULL in nfs_fattr_init().
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
0.66%
Chance of exploitation in the next 30 days
Percentile
51%
Versus all other CVEs
30-day change
0.00 pp
From 0.66% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu134 products
- linuxAll versions (No fix recorded) | < 4.4.0-268.302 | < 4.15.0-237.249 | < 5.4.0-208.228 | < 5.15.0-133.144 | < 6.8.0-58.60
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 4.4.0-1143.149 | < 4.4.0-1181.196 | < 4.15.0-1180.193 | < 5.4.0-1140.150 | < 5.15.0-1078.85 | < 6.8.0-1027.29
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 88034c3d88c2c48b215f2cc5eb22e564aa817f9c, < 25ffd294fef81a7f3cd9528adf21560c04d98747 | ≥ 88034c3d88c2c48b215f2cc5eb22e564aa817f9c, < bbfcd261cc068fe1cd02a4e871275074a0daa4e2 | ≥ 88034c3d88c2c48b215f2cc5eb22e564aa817f9c, < 8fc5ea9231af9122d227c9c13f5e578fca48d2e3 | ≥ 88034c3d88c2c48b215f2cc5eb22e564aa817f9c, < 9b453e8b108a5a93a6e348cf2ba4c9c138314a00 | ≥ 88034c3d88c2c48b215f2cc5eb22e564aa817f9c, < f6b2b2b981af8e7d7c62d34143acefa4e1edfe8b | ≥ 88034c3d88c2c48b215f2cc5eb22e564aa817f9c, < f749cb60a01f8391c760a1d6ecd938cadacf9549 | ≥ 88034c3d88c2c48b215f2cc5eb22e564aa817f9c, < 9be0a21ae52b3b822d0eec4d14e909ab394f8a92 | ≥ 88034c3d88c2c48b215f2cc5eb22e564aa817f9c, < dc270d7159699ad6d11decadfce9633f0f71c1db | 3.5
- linux_kernel≥ 3.5, < 4.19.324 | ≥ 4.20, < 5.4.286 | ≥ 5.5, < 5.10.230 | ≥ 5.11, < 5.15.172 | ≥ 5.16, < 6.1.117 | ≥ 6.2, < 6.6.61 | ≥ 6.7, < 6.11.8 | 6.12:rc1 | 6.12:rc2 | 6.12:rc3 | 6.12:rc4 | 6.12:rc5 | 6.12:rc6
Debian1 product
- linux< 6.1.119-1 | < 6.11.9-1
3 vendors · 137 products
