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CVE-2025-68741— scsi: qla2xxx: Fix improper freeing of purex item

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qla2xxx_process_purls_iocb函数中释放purex项不当，可能导致内存损坏。

CVSS 9.8 · Critical EPSS 0.43% · P36

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux 875386b98857822b77ac7f95bdf367b70af5b78c< 4bccd506a1f1ab01d1f45b2a3effff6bedc73cf9 affected
875386b98857822b77ac7f95bdf367b70af5b78c< 8e9f0a0717ba31d5842721627ade1e62d7aec012 affected
875386b98857822b77ac7f95bdf367b70af5b78c< cfe3e2f768d248fd3d965d561d0768a56dd0b9f8 affected
875386b98857822b77ac7f95bdf367b70af5b78c< 5fa1c8226b4532ad7011d295d3ab4ad45df105ae affected
875386b98857822b77ac7f95bdf367b70af5b78c< 78b1a242fe612a755f2158fd206ee6bb577d18ca affected
6.6 affected
< 6.6 unaffected
6.6.120≤ 6.6.* unaffected
… +4 more rows
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I. Basic Information for CVE-2025-68741

Vulnerability Information
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Vulnerability Title
scsi: qla2xxx: Fix improper freeing of purex item
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix improper freeing of purex item In qla2xxx_process_purls_iocb(), an item is allocated via qla27xx_copy_multiple_pkt(), which internally calls qla24xx_alloc_purex_item(). The qla24xx_alloc_purex_item() function may return a pre-allocated item from a per-adapter pool for small allocations, instead of dynamically allocating memory with kzalloc(). An error handling path in qla2xxx_process_purls_iocb() incorrectly uses kfree() to release the item. If the item was from the pre-allocated pool, calling kfree() on it is a bug that can lead to memory corruption. Fix this by using the correct deallocation function, qla24xx_free_purex_item(), which properly handles both dynamically allocated and pre-allocated items.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/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qla2xxx_process_purls_iocb函数中释放purex项不当，可能导致内存损坏。
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 875386b98857822b77ac7f95bdf367b70af5b78c ~ 4bccd506a1f1ab01d1f45b2a3effff6bedc73cf9 -
Linux Linux 6.6 -

II. Public POCs for CVE-2025-68741

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III. Intelligence Information for CVE-2025-68741

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Other References for CVE-2025-68741 (1)

Same Patch Batch · Linux · 2025-12-24 · 322 CVEs total

CVE-2023-53867 9.8 CRITICAL ceph: fix potential use-after-free bug when trimming caps
CVE-2025-68726 9.8 CRITICAL crypto: aead - Fix reqsize handling
CVE-2025-68745 9.8 CRITICAL scsi: qla2xxx: Clear cmds after chip reset
CVE-2023-54094 9.8 CRITICAL net: prevent skb corruption on frag list segmentation
CVE-2023-54090 9.8 CRITICAL ixgbe: Fix panic during XDP_TX with > 64 CPUs
CVE-2022-50717 9.8 CRITICAL nvmet-tcp: add bounds check on Transfer Tag
CVE-2023-54076 9.8 CRITICAL smb: client: fix missed ses refcounting
CVE-2025-68359 9.8 CRITICAL btrfs: fix double free of qgroup record after failure to add delayed ref head
CVE-2023-53996 9.3 CRITICAL x86/sev: Make enc_dec_hypercall() accept a size instead of npages
CVE-2023-54071 8.8 HIGH wifi: rtw88: use work to update rate to avoid RCU warning
CVE-2023-54120 8.8 HIGH Bluetooth: Fix race condition in hidp_session_thread
CVE-2023-54043 8.8 HIGH iommufd: Do not add the same hwpt to the ioas->hwpt_list twice
CVE-2022-50732 8.8 HIGH staging: rtl8192u: Fix use after free in ieee80211_rx()
CVE-2023-54092 8.8 HIGH KVM: s390: pv: fix index value of replaced ASCE
CVE-2023-54060 8.8 HIGH iommufd: Set end correctly when doing batch carry
CVE-2023-54040 8.8 HIGH ice: fix wrong fallback logic for FDIR
CVE-2025-68736 8.8 HIGH landlock: Fix handling of disconnected directories
CVE-2023-53986 8.6 HIGH mips: bmips: BCM6358: disable RAC flush for TP1
CVE-2022-50746 8.4 HIGH erofs: validate the extent length for uncompressed pclusters
CVE-2025-68360 8.2 HIGH wifi: mt76: wed: use proper wed reference in mt76 wed driver callabacks

Showing top 20 of 322 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-68741

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