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CVE-2024-26856— net: sparx5: Fix use after free inside sparx5_del_mact_entry

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，该漏洞源于内存释放后重用。

CVSS 8.8 · High EPSS 0.32% · P24

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux b37a1bae742f92cc9b1f777d54e04ee3d86bbfc2< e46274df1100fb0c06704195bfff5bfbd418bf64 affected
b37a1bae742f92cc9b1f777d54e04ee3d86bbfc2< 0de693d68b0a18d5e256556c7c62d92cca35ad52 affected
b37a1bae742f92cc9b1f777d54e04ee3d86bbfc2< e83bebb718fd1f42549358730e1206164e0861d6 affected
b37a1bae742f92cc9b1f777d54e04ee3d86bbfc2< 71809805b95052ff551922f11660008fb3666025 affected
b37a1bae742f92cc9b1f777d54e04ee3d86bbfc2< 89d72d4125e94aa3c2140fedd97ce07ba9e37674 affected
5.14 affected
< 5.14 unaffected
5.15.152≤ 5.15.* unaffected
… +4 more rows
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I. Basic Information for CVE-2024-26856

Vulnerability Information
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Vulnerability Title
net: sparx5: Fix use after free inside sparx5_del_mact_entry
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: sparx5: Fix use after free inside sparx5_del_mact_entry Based on the static analyzis of the code it looks like when an entry from the MAC table was removed, the entry was still used after being freed. More precise the vid of the mac_entry was used after calling devm_kfree on the mac_entry. The fix consists in first using the vid of the mac_entry to delete the entry from the HW and after that to free it.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/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，该漏洞源于内存释放后重用。
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 b37a1bae742f92cc9b1f777d54e04ee3d86bbfc2 ~ e46274df1100fb0c06704195bfff5bfbd418bf64 -
Linux Linux 5.14 -

II. Public POCs for CVE-2024-26856

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III. Intelligence Information for CVE-2024-26856

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Other References for CVE-2024-26856 (4)

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

CVE-2024-26877 9.8 CRITICAL crypto: xilinx - call finalize with bh disabled
CVE-2024-26853 9.8 CRITICAL igc: avoid returning frame twice in XDP_REDIRECT
CVE-2024-26828 9.4 CRITICAL cifs: fix underflow in parse_server_interfaces()
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-2024-26824 7.8 HIGH crypto: algif_hash - Remove bogus SGL free on zero-length error path
CVE-2024-26898 7.8 HIGH aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts
CVE-2024-26838 7.8 HIGH RDMA/irdma: Fix KASAN issue with tasklet
CVE-2024-26852 7.8 HIGH net/ipv6: avoid possible UAF in ip6_route_mpath_notify()
CVE-2024-26895 7.8 HIGH wifi: wilc1000: prevent use-after-free on vif when cleaning up all interfaces
CVE-2024-26890 7.8 HIGH Bluetooth: btrtl: fix out of bounds memory access
CVE-2024-26864 7.8 HIGH tcp: Fix refcnt handling in __inet_hash_connect().
CVE-2024-26865 7.8 HIGH rds: tcp: Fix use-after-free of net in reqsk_timer_handler().
CVE-2024-26869 7.8 HIGH f2fs: fix to truncate meta inode pages forcely
CVE-2024-26870 7.8 HIGH NFSv4.2: fix nfs4_listxattr kernel BUG at mm/usercopy.c:102
CVE-2024-26872 7.8 HIGH RDMA/srpt: Do not register event handler until srpt device is fully setup
CVE-2024-26885 7.8 HIGH bpf: Fix DEVMAP_HASH overflow check on 32-bit arches
CVE-2024-26884 7.8 HIGH bpf: Fix hashtab overflow check on 32-bit arches
CVE-2024-26883 7.8 HIGH bpf: Fix stackmap overflow check on 32-bit arches
CVE-2024-26880 7.8 HIGH dm: call the resume method on internal suspend

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-2024-26856

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