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CVE-2026-53009— ice: fix double-free of tx_buf skb

CVSS 7.8 · High EPSS 0.13% · P3

Possible ATT&CK Techniques 1AI

T1562.008

Affected Version Matrix 6

VendorProductVersion RangeStatus
LinuxLinuxd76a60ba7afb89523c88cf2ed3a044ce4180289e< 4c08fc2119ef0281cfa2cee007acf0a251be55f2affected
d76a60ba7afb89523c88cf2ed3a044ce4180289e< 1a303baa715e6b78d6a406aaf335f87ff35acfcdaffected
4.17affected
< 4.17unaffected
7.0.10≤ 7.0.*unaffected
7.1≤ *unaffected
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I. Basic Information for CVE-2026-53009

Vulnerability Information
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Vulnerability Title
ice: fix double-free of tx_buf skb
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ice: fix double-free of tx_buf skb If ice_tso() or ice_tx_csum() fail, the error path in ice_xmit_frame_ring() frees the skb, but the 'first' tx_buf still points to it and is marked as valid (ICE_TX_BUF_SKB). 'next_to_use' remains unchanged, so the potential problem will likely fix itself when the next packet is transmitted and the tx_buf gets overwritten. But if there is no next packet and the interface is brought down instead, ice_clean_tx_ring() -> ice_unmap_and_free_tx_buf() will find the tx_buf and free the skb for the second time. The fix is to reset the tx_buf type to ICE_TX_BUF_EMPTY in the error path, so that ice_unmap_and_free_tx_buf(). Move the initialization of 'first' up, to ensure it's already valid in case we hit the linearization error path. The bug was spotted by AI while I had it looking for something else. It also proposed an initial version of the patch. I reproduced the bug and tested the fix by adding code to inject failures, on a build with KASAN. I looked for similar bugs in related Intel drivers and did not find any.
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基金会开源的操作系统Linux所使用的内核。 Linux kernel 4.17版本存在安全漏洞，该漏洞源于错误处理路径中tx_buf的skb双重释放问题，可能导致接口关闭时重复释放内存。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux d76a60ba7afb89523c88cf2ed3a044ce4180289e ~ 4c08fc2119ef0281cfa2cee007acf0a251be55f2 -
LinuxLinux 4.17 -

II. Public POCs for CVE-2026-53009

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III. Intelligence Information for CVE-2026-53009

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Patches & Fixes for CVE-2026-53009 (2)

Same Patch Batch · Linux · 2026-06-24 · 219 CVEs total

CVE-2026-530499.8 CRITICALgfs2: add some missing log locking
CVE-2026-529939.8 CRITICALtipc: fix double-free in tipc_buf_append()
CVE-2026-529899.8 CRITICALnvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers
CVE-2026-529869.8 CRITICALnetfilter: nf_conntrack_sip: don't use simple_strtoul
CVE-2026-529829.8 CRITICALnet: usb: rtl8150: fix use-after-free in rtl8150_start_xmit()
CVE-2026-530029.8 CRITICALnetfilter: conntrack: remove sprintf usage
CVE-2026-530869.8 CRITICALnet: bcmgenet: fix racing timeout handler
CVE-2026-530459.8 CRITICALmemory: tegra124-emc: Fix dll_change check
CVE-2026-530069.8 CRITICALipv6: fix possible UAF in icmpv6_rcv()
CVE-2026-530469.8 CRITICALksmbd: fix use-after-free from async crypto on Qualcomm crypto engine
CVE-2026-529559.8 CRITICALlibceph: Fix potential out-of-bounds access in crush_decode()
CVE-2026-530109.8 CRITICALksmbd: fix use-after-free in smb2_open during durable reconnect
CVE-2026-530889.8 CRITICALnet: bcmgenet: fix off-by-one in bcmgenet_put_txcb
CVE-2026-529249.8 CRITICALsctp: purge outqueue on stale COOKIE-ECHO handling
CVE-2026-529319.8 CRITICALbatman-adv: tp_meter: avoid use of uninit sender vars
CVE-2026-530559.8 CRITICALcrypto: hisilicon/sec2 - prevent req used-after-free for sec
CVE-2026-529149.8 CRITICALbatman-adv: fix fragment reassembly length accounting
CVE-2026-529589.1 CRITICALlibceph: Fix potential out-of-bounds access in osdmap_decode()
CVE-2026-530439.1 CRITICALocfs2/dlm: validate qr_numregions in dlm_match_regions()
CVE-2026-529999.1 CRITICALnetfilter: nfnetlink_osf: fix out-of-bounds read on option matching

Showing top 20 of 219 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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