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CVE-2026-23201— ceph: fix oops due to invalid pointer for kfree() in parse_longname()

EPSS 0.02% · P5
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I. Basic Information for CVE-2026-23201

Vulnerability Information
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Vulnerability Title
ceph: fix oops due to invalid pointer for kfree() in parse_longname()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ceph: fix oops due to invalid pointer for kfree() in parse_longname() This fixes a kernel oops when reading ceph snapshot directories (.snap), for example by simply running `ls /mnt/my_ceph/.snap`. The variable str is guarded by __free(kfree), but advanced by one for skipping the initial '_' in snapshot names. Thus, kfree() is called with an invalid pointer. This patch removes the need for advancing the pointer so kfree() is called with correct memory pointer. Steps to reproduce: 1. Create snapshots on a cephfs volume (I've 63 snaps in my testcase) 2. Add cephfs mount to fstab $ echo "samba-fileserver@.files=/volumes/datapool/stuff/3461082b-ecc9-4e82-8549-3fd2590d3fb6 /mnt/test/stuff ceph acl,noatime,_netdev 0 0" >> /etc/fstab 3. Reboot the system $ systemctl reboot 4. Check if it's really mounted $ mount | grep stuff 5. List snapshots (expected 63 snapshots on my system) $ ls /mnt/test/stuff/.snap Now ls hangs forever and the kernel log shows the oops.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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parse_longname函数中指针操作不当，可能导致空指针取消引用。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux bb80f7618832d26f7e395f52f82b1dac76223e5f ~ 8c9af7339de419819cfc641d551675d38ff99abf -
LinuxLinux 6.17 -

II. Public POCs for CVE-2026-23201

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III. Intelligence Information for CVE-2026-23201

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Same Patch Batch · Linux · 2026-02-14 · 108 CVEs total

CVE-2026-231938.8 HIGHscsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()
CVE-2026-231728.4 HIGHnet: wwan: t7xx: fix potential skb->frags overflow in RX path
CVE-2026-232097.8 HIGHmacvlan: fix error recovery in macvlan_common_newlink()
CVE-2026-231697.8 HIGHmptcp: fix race in mptcp_pm_nl_flush_addrs_doit()
CVE-2026-231717.8 HIGHbonding: fix use-after-free due to enslave fail after slave array update
CVE-2026-231787.8 HIGHHID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report()
CVE-2026-231847.8 HIGHbinder: fix UAF in binder_netlink_report()
CVE-2026-231857.8 HIGHwifi: iwlwifi: mld: cancel mlo_scan_start_wk
CVE-2026-231917.8 HIGHALSA: aloop: Fix racy access at PCM trigger
CVE-2026-231927.8 HIGHlinkwatch: use __dev_put() in callers to prevent UAF
CVE-2026-231987.8 HIGHKVM: Don't clobber irqfd routing type when deassigning irqfd
CVE-2026-231367.5 HIGHlibceph: reset sparse-read state in osd_fault()
CVE-2026-231487.5 HIGHnvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference
CVE-2026-231397.5 HIGHnetfilter: nf_conncount: update last_gc only when GC has been performed
CVE-2026-231617.3 HIGHmm/shmem, swap: fix race of truncate and swap entry split
CVE-2026-232047.1 HIGHnet/sched: cls_u32: use skb_header_pointer_careful()
CVE-2026-231757.0 HIGHnet: cpsw: Execute ndo_set_rx_mode callback in a work queue
CVE-2026-231807.0 HIGHdpaa2-switch: add bounds check for if_id in IRQ handler
CVE-2026-231957.0 HIGHcgroup/dmem: avoid pool UAF
CVE-2025-71200mmc: sdhci-of-dwcmshc: Prevent illegal clock reduction in HS200/HS400 mode

Showing top 20 of 108 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-23201

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