CVE-2024-50199— mm/swapfile: skip HugeTLB pages for unuse_vma
Possible ATT&CK Techniques 1AI
T1068 · Exploitation for Privilege EscalationAffected Version Matrix 16
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 0fe6e20b9c4c53b3e97096ee73a0857f60aad43f< ba7f982cdb37ff5a7739dec85d7325ea66fc1496 | affected |
0fe6e20b9c4c53b3e97096ee73a0857f60aad43f< 417d5838ca73c6331ae2fe692fab6c25c00d9a0b | affected | ||
0fe6e20b9c4c53b3e97096ee73a0857f60aad43f< e41710f5a61aca9d6baaa8f53908a927dd9e7aa7 | affected | ||
0fe6e20b9c4c53b3e97096ee73a0857f60aad43f< 6ec0fe3756f941f42f8c57156b8bdf2877b2ebaf | affected | ||
0fe6e20b9c4c53b3e97096ee73a0857f60aad43f< bed2b9037806c62166a0ef9a559a1e7e3e1275b8 | affected | ||
0fe6e20b9c4c53b3e97096ee73a0857f60aad43f< eb66a833cdd2f7302ee05d05e0fa12a2ca32eb87 | affected | ||
0fe6e20b9c4c53b3e97096ee73a0857f60aad43f< 7528c4fb1237512ee18049f852f014eba80bbe8d | affected | ||
2.6.36 | affected | ||
| … +8 more rows | |||
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I. Basic Information for CVE-2024-50199
Vulnerability Information
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Vulnerability Title
mm/swapfile: skip HugeTLB pages for unuse_vma
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mm/swapfile: skip HugeTLB pages for unuse_vma I got a bad pud error and lost a 1GB HugeTLB when calling swapoff. The problem can be reproduced by the following steps: 1. Allocate an anonymous 1GB HugeTLB and some other anonymous memory. 2. Swapout the above anonymous memory. 3. run swapoff and we will get a bad pud error in kernel message: mm/pgtable-generic.c:42: bad pud 00000000743d215d(84000001400000e7) We can tell that pud_clear_bad is called by pud_none_or_clear_bad in unuse_pud_range() by ftrace. And therefore the HugeTLB pages will never be freed because we lost it from page table. We can skip HugeTLB pages for unuse_vma to fix it.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于对HugeTLB页面处理不当。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2024-50199
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2024-50199 (2)
Same Patch Batch · Linux · 2024-11-08 · 38 CVEs total
| CVE-2024-50206 | 9.8 CRITICAL | net: ethernet: mtk_eth_soc: fix memory corruption during fq dma init |
| CVE-2024-50185 | 8.2 HIGH | mptcp: handle consistently DSS corruption |
| CVE-2024-50174 | 7.8 HIGH | drm/panthor: Fix race when converting group handle to group object |
| CVE-2024-50211 | 7.8 HIGH | udf: refactor inode_bmap() to handle error |
| CVE-2024-50208 | 7.8 HIGH | RDMA/bnxt_re: Fix a bug while setting up Level-2 PBL pages |
| CVE-2024-50207 | 7.8 HIGH | ring-buffer: Fix reader locking when changing the sub buffer order |
| CVE-2024-50203 | 7.8 HIGH | bpf, arm64: Fix address emission with tag-based KASAN enabled |
| CVE-2024-50200 | 7.8 HIGH | maple_tree: correct tree corruption on spanning store |
| CVE-2024-50189 | 7.8 HIGH | HID: amd_sfh: Switch to device-managed dmam_alloc_coherent() |
| CVE-2024-50188 | 7.8 HIGH | net: phy: dp83869: fix memory corruption when enabling fiber |
| CVE-2024-50187 | 7.8 HIGH | drm/vc4: Stop the active perfmon before being destroyed |
| CVE-2024-50186 | 7.8 HIGH | net: explicitly clear the sk pointer, when pf->create fails |
| CVE-2024-50173 | 7.8 HIGH | drm/panthor: Fix access to uninitialized variable in tick_ctx_cleanup() |
| CVE-2024-50175 | 7.8 HIGH | media: qcom: camss: Remove use_count guard in stop_streaming |
| CVE-2024-50182 | 7.1 HIGH | secretmem: disable memfd_secret() if arch cannot set direct map |
| CVE-2024-50195 | 7.1 HIGH | posix-clock: Fix missing timespec64 check in pc_clock_settime() |
| CVE-2024-50198 | iio: light: veml6030: fix IIO device retrieval from embedded device | |
| CVE-2024-50210 | posix-clock: posix-clock: Fix unbalanced locking in pc_clock_settime() | |
| CVE-2024-50176 | remoteproc: k3-r5: Fix error handling when power-up failed | |
| CVE-2024-50209 | RDMA/bnxt_re: Add a check for memory allocation |
Showing top 20 of 38 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
Same vendor: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
V. Comments for CVE-2024-50199
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