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CVE-2024-26832— mm: zswap: fix missing folio cleanup in writeback race path

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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，该漏洞源于在写回竞赛路径中缺少对作品集的清理。

AI Predicted 3.7 Difficulty: Theoretical EPSS 0.22% · P13

Possible ATT&CK Techniques 1 AI

T1042

Affected Version Matrix 13

VendorProduct Version RangeStatus
Linux Linux 2cab13f500a6333bd2b853783ac76be9e4956f8a< 14f1992430ef9e647b02aa8ca12c5bcb9a1dffea affected
04fc7816089c5a32c29a04ec94b998e219dfb946< 6156277d1b26cb3fdb6fcbf0686ab78268571644 affected
04fc7816089c5a32c29a04ec94b998e219dfb946< e2891c763aa2cff74dd6b5e978411ccf0cf94abe affected
04fc7816089c5a32c29a04ec94b998e219dfb946< e3b63e966cac0bf78aaa1efede1827a252815a1d affected
ba700ea13bf0105a4773c654f7d3bef8adb64ab2 affected
6.1.30< 6.1.80 affected
6.3.4< 6.4 affected
6.4 affected
… +5 more rows
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I. Basic Information for CVE-2024-26832

Vulnerability Information
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Vulnerability Title
mm: zswap: fix missing folio cleanup in writeback race path
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mm: zswap: fix missing folio cleanup in writeback race path In zswap_writeback_entry(), after we get a folio from __read_swap_cache_async(), we grab the tree lock again to check that the swap entry was not invalidated and recycled. If it was, we delete the folio we just added to the swap cache and exit. However, __read_swap_cache_async() returns the folio locked when it is newly allocated, which is always true for this path, and the folio is ref'd. Make sure to unlock and put the folio before returning. This was discovered by code inspection, probably because this path handles a race condition that should not happen often, and the bug would not crash the system, it will only strand the folio indefinitely.
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，该漏洞源于在写回竞赛路径中缺少对作品集的清理。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 2cab13f500a6333bd2b853783ac76be9e4956f8a ~ 14f1992430ef9e647b02aa8ca12c5bcb9a1dffea -
Linux Linux 6.4 -

II. Public POCs for CVE-2024-26832

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III. Intelligence Information for CVE-2024-26832

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Other References for CVE-2024-26832 (4)

Same Patch Batch · Linux · 2024-04-17 · 100 CVEs total

CVE-2024-26853 9.8 CRITICAL igc: avoid returning frame twice in XDP_REDIRECT
CVE-2024-26877 9.8 CRITICAL crypto: xilinx - call finalize with bh disabled
CVE-2024-26828 9.4 CRITICAL cifs: fix underflow in parse_server_interfaces()
CVE-2024-26856 8.8 HIGH net: sparx5: Fix use after free inside sparx5_del_mact_entry
CVE-2024-26822 8.7 HIGH smb: client: set correct id, uid and cruid for multiuser automounts
CVE-2024-26830 8.4 HIGH i40e: Do not allow untrusted VF to remove administratively set MAC
CVE-2024-26883 7.8 HIGH bpf: Fix stackmap overflow check on 32-bit arches
CVE-2024-26872 7.8 HIGH RDMA/srpt: Do not register event handler until srpt device is fully setup
CVE-2024-26824 7.8 HIGH crypto: algif_hash - Remove bogus SGL free on zero-length error path
CVE-2024-26870 7.8 HIGH NFSv4.2: fix nfs4_listxattr kernel BUG at mm/usercopy.c:102
CVE-2024-26823 7.8 HIGH irqchip/gic-v3-its: Restore quirk probing for ACPI-based systems
CVE-2024-26869 7.8 HIGH f2fs: fix to truncate meta inode pages forcely
CVE-2024-26911 7.8 HIGH drm/buddy: Fix alloc_range() error handling code
CVE-2024-26838 7.8 HIGH RDMA/irdma: Fix KASAN issue with tasklet
CVE-2024-26865 7.8 HIGH rds: tcp: Fix use-after-free of net in reqsk_timer_handler().
CVE-2024-26864 7.8 HIGH tcp: Fix refcnt handling in __inet_hash_connect().
CVE-2024-26890 7.8 HIGH Bluetooth: btrtl: fix out of bounds memory access
CVE-2024-26895 7.8 HIGH wifi: wilc1000: prevent use-after-free on vif when cleaning up all interfaces
CVE-2024-26898 7.8 HIGH aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts
CVE-2024-26852 7.8 HIGH net/ipv6: avoid possible UAF in ip6_route_mpath_notify()

Showing top 20 of 100 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-26832

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