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CVE-2026-46024— libceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply()

CVSS 7.5 · High EPSS 0.07% · P21

Affected Version Matrix 16

VendorProductVersion RangeStatus
LinuxLinux4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc< 9ded62c302c0342efdb5eda3bf6e75720caad0dfaffected
4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc< f101271fcf55d7eacfefd610b51ec65f46ba8118affected
4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc< 4b2738b93edad661178340239de657d876b73d3daffected
4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc< 927e4bd5692f2a4901808822981fb2c8d4456548affected
4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc< 016bc663657366d386993f63eb31072eb45a2b77affected
4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc< 8f2be7285941a33a9f72579a23b96392f83c758eaffected
4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc< 5199c125d25aeae8615c4fc31652cc0fe624338eaffected
2.6.34affected
… +8 more rows
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I. Basic Information for CVE-2026-46024

Vulnerability Information
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Vulnerability Title
libceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: libceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply() If a message of type CEPH_MSG_AUTH_REPLY contains a zero value for both protocol and result, this is currently not treated as an error. In case of ac->negotiating == true and ac->protocol > 0, this leads to setting ac->protocol = 0 and ac->ops = NULL. Thereafter, the check for ac->protocol != protocol returns false, and init_protocol() is not called. Subsequently, ac->ops->handle_reply() is called, which leads to a null pointer dereference, because ac->ops is still NULL. This patch changes the check for ac->protocol != protocol to !ac->protocol, as this also includes the case when the protocol was set to zero in the message. This causes the message to be treated as containing a bad auth protocol.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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ceph_handle_auth_reply函数中未正确处理协议和结果均为零的消息，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 4e7a5dcd1bbab6560fbc8ada29a840e7a20ed7bc ~ 9ded62c302c0342efdb5eda3bf6e75720caad0df -
LinuxLinux 2.6.34 -

II. Public POCs for CVE-2026-46024

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III. Intelligence Information for CVE-2026-46024

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Patches & Fixes for CVE-2026-46024 (7)

Same Patch Batch · Linux · 2026-05-27 · 276 CVEs total

CVE-2026-459889.8 CRITICALrxrpc: Fix re-decryption of RESPONSE packets
CVE-2026-458989.8 CRITICALRDMA/iwcm: Fix workqueue list corruption by removing work_list
CVE-2026-459729.8 CRITICALsmb: client: fix potential UAF and double free in smb2_open_file()
CVE-2026-460399.8 CRITICALrxgk: Fix potential integer overflow in length check
CVE-2026-460439.1 CRITICALRDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv
CVE-2026-459458.8 HIGHiommu/vt-d: Fix race condition during PASID entry replacement
CVE-2026-460568.8 HIGHBluetooth: hci_event: fix potential UAF in SSP passkey handlers
CVE-2026-458438.2 HIGHslip: bound decode() reads against the compressed packet length
CVE-2026-460378.2 HIGHipv4: icmp: validate reply type before using icmp_pointers
CVE-2026-460998.1 HIGHnet: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels
CVE-2026-460108.1 HIGHrxrpc: Fix error handling in rxgk_extract_token()
CVE-2026-460767.9 HIGHKVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1
CVE-2026-460627.8 HIGHntfs3: fix integer overflow in run_unpack() volume boundary check
CVE-2026-459317.8 HIGHaccel/amdxdna: Hold mm structure across iommu_sva_unbind_device()
CVE-2026-459297.8 HIGHovpn: fix possible use-after-free in ovpn_net_xmit
CVE-2026-458527.8 HIGHRDMA/rxe: Fix double free in rxe_srq_from_init
CVE-2026-458787.8 HIGHdrm/amdkfd: Fix watch_id bounds checking in debug address watch v2
CVE-2026-459707.8 HIGHbonding: alb: fix UAF in rlb_arp_recv during bond up/down
CVE-2026-460367.8 HIGHvfio/cdx: Serialize VFIO_DEVICE_SET_IRQS with a per-device mutex
CVE-2026-460537.8 HIGHnet: rds: fix MR cleanup on copy error

Showing top 20 of 276 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46024

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