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CVE-2024-57982— xfrm: state: fix out-of-bounds read during lookup

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xfrm: state模块在查找过程中出现越界读取。

CVSS 7.8 · High EPSS 0.24% · P15

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux c2f672fc94642bae96821a393f342edcfa9794a6< b86dc510308d7a8955f3f47a4fea4bef887653e4 affected
c2f672fc94642bae96821a393f342edcfa9794a6< a16871c7832ea6435abb6e0b58289ae7dcb7e4fc affected
c2f672fc94642bae96821a393f342edcfa9794a6< dd4c2a174994238d55ab54da2545543d36f4e0d0 affected
c2f672fc94642bae96821a393f342edcfa9794a6< e952837f3ddb0ff726d5b582aa1aad9aa38d024d affected
4.9 affected
< 4.9 unaffected
6.6.120≤ 6.6.* unaffected
6.12.13≤ 6.12.* unaffected
… +2 more rows
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I. Basic Information for CVE-2024-57982

Vulnerability Information
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Vulnerability Title
xfrm: state: fix out-of-bounds read during lookup
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: xfrm: state: fix out-of-bounds read during lookup lookup and resize can run in parallel. The xfrm_state_hash_generation seqlock ensures a retry, but the hash functions can observe a hmask value that is too large for the new hlist array. rehash does: rcu_assign_pointer(net->xfrm.state_bydst, ndst) [..] net->xfrm.state_hmask = nhashmask; While state lookup does: h = xfrm_dst_hash(net, daddr, saddr, tmpl->reqid, encap_family); hlist_for_each_entry_rcu(x, net->xfrm.state_bydst + h, bydst) { This is only safe in case the update to state_bydst is larger than net->xfrm.xfrm_state_hmask (or if the lookup function gets serialized via state spinlock again). Fix this by prefetching state_hmask and the associated pointers. The xfrm_state_hash_generation seqlock retry will ensure that the pointer and the hmask will be consistent. The existing helpers, like xfrm_dst_hash(), are now unsafe for RCU side, add lockdep assertions to document that they are only safe for insert side. xfrm_state_lookup_byaddr() uses the spinlock rather than RCU. AFAICS this is an oversight from back when state lookup was converted to RCU, this lock should be replaced with RCU in a future patch.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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xfrm: state模块在查找过程中出现越界读取。
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 c2f672fc94642bae96821a393f342edcfa9794a6 ~ b86dc510308d7a8955f3f47a4fea4bef887653e4 -
Linux Linux 4.9 -

II. Public POCs for CVE-2024-57982

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III. Intelligence Information for CVE-2024-57982

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Patches & Fixes for CVE-2024-57982 (3)

Same Patch Batch · Linux · 2025-02-27 · 177 CVEs total

CVE-2025-21805 9.8 CRITICAL RDMA/rtrs: Add missing deinit() call
CVE-2025-21707 9.8 CRITICAL mptcp: consolidate suboption status
CVE-2025-21748 9.8 CRITICAL ksmbd: fix integer overflows on 32 bit systems
CVE-2025-21796 9.8 CRITICAL nfsd: clear acl_access/acl_default after releasing them
CVE-2024-58006 9.6 CRITICAL PCI: dwc: ep: Prevent changing BAR size/flags in pci_epc_set_bar()
CVE-2024-57999 8.8 HIGH powerpc/pseries/iommu: IOMMU incorrectly marks MMIO range in DDW
CVE-2024-57997 8.8 HIGH wifi: wcn36xx: fix channel survey memory allocation size
CVE-2024-57995 8.8 HIGH wifi: ath12k: fix read pointer after free in ath12k_mac_assign_vif_to_vdev()
CVE-2025-21735 8.8 HIGH NFC: nci: Add bounds checking in nci_hci_create_pipe()
CVE-2025-21710 8.2 HIGH tcp: correct handling of extreme memory squeeze
CVE-2024-57973 8.1 HIGH rdma/cxgb4: Prevent potential integer overflow on 32bit
CVE-2025-21760 8.1 HIGH ndisc: extend RCU protection in ndisc_send_skb()
CVE-2025-21766 8.1 HIGH ipv4: use RCU protection in __ip_rt_update_pmtu()
CVE-2025-21765 8.1 HIGH ipv6: use RCU protection in ip6_default_advmss()
CVE-2025-21762 8.1 HIGH arp: use RCU protection in arp_xmit()
CVE-2024-58004 7.8 HIGH media: intel/ipu6: remove cpu latency qos request on error
CVE-2024-58002 7.8 HIGH media: uvcvideo: Remove dangling pointers
CVE-2024-54456 7.8 HIGH NFS: Fix potential buffer overflowin nfs_sysfs_link_rpc_client()
CVE-2024-58003 7.8 HIGH media: i2c: ds90ub9x3: Fix extra fwnode_handle_put()
CVE-2025-21778 7.8 HIGH tracing: Do not allow mmap() of persistent ring buffer

Showing top 20 of 177 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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