CVE-2026-52957— libceph decode_choose_args() 潜在空指针解引用漏洞
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一、 漏洞 CVE-2026-52957 基础信息
漏洞信息
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Vulnerability Title
libceph: Fix potential null-ptr-deref in decode_choose_args()
来源: 美国国家漏洞数据库 NVD
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: libceph: Fix potential null-ptr-deref in decode_choose_args() A message of type CEPH_MSG_OSD_MAP contains an OSD map that itself contains a CRUSH map. When decoding this CRUSH map in crush_decode(), an array of max_buckets CRUSH buckets is decoded, where some indices may not refer to actual buckets and are therefore set to NULL. The received CRUSH map may optionally contain choose_args that get decoded in decode_choose_args(). When decoding a crush_choose_arg_map, a series of choose_args for different buckets is decoded, with the bucket_index being read from the incoming message. It is only checked that the bucket index does not exceed max_buckets, but not that it doesn't point to an index with a NULL bucket. If a (potentially corrupted) message contains a crush_choose_arg_map including such a bucket_index, a null pointer dereference may occur in the subsequent processing when attempting to access the bucket with the given index. This patch fixes the issue by extending the affected check. Now, it is only attempted to access the bucket if it is not NULL.
来源: 美国国家漏洞数据库 NVD
CVSS Information
N/A
来源: 美国国家漏洞数据库 NVD
Vulnerability Type
N/A
来源: 美国国家漏洞数据库 NVD
受影响产品
二、漏洞 CVE-2026-52957 的公开POC
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CVE-2026-52957 补丁与修复 (4)
CVE-2026-52957 其他参考 (4)
同批安全公告 · Linux · 2026-06-24 · 共 219 条
| CVE-2026-52979 | net: psp: 创建关联时检查设备注销 | |
| CVE-2026-52992 | adfs_validate_bblk() 未验证 nzones 漏洞 | |
| CVE-2026-52993 | TIPC tipc_buf_append() 双重释放漏洞 | |
| CVE-2026-52991 | sched/psi 文件释放与压力写入间竞态条件漏洞 | |
| CVE-2026-52990 | fsnotify inode引用泄漏漏洞 | |
| CVE-2026-52988 | netfilter: nf_tables 在提交阶段使用 splice_list_rcu() 加入钩子列表 | |
| CVE-2026-52989 | nvmet-tcp 传播 nvmet_tcp_build_pdu_iovec() 错误到调用者 | |
| CVE-2026-52987 | AMD GPU 驱动用户队列验证中双重释放漏洞 | |
| CVE-2026-52986 | netfilter nf_conntrack_sip 漏洞 | |
| CVE-2026-52985 | netdevsim 虚拟网卡 iphdr结构体未初始化漏洞 | |
| CVE-2026-52984 | Linux netem 队列限制检查漏洞 | |
| CVE-2026-52982 | Realtek RTL8150 网卡 use-after-free 漏洞 | |
| CVE-2026-52983 | Airoha网络驱动TX路径BQL失衡漏洞 | |
| CVE-2026-52981 | 内核neigh模块skb所有权管理漏洞 | |
| CVE-2026-52969 | KVM: kvm_reset_dirty_gfn() 回绕偏移拒绝漏洞 | |
| CVE-2026-52971 | ena: get_timestamp中潜在Use-after-Free漏洞 | |
| CVE-2026-52972 | crypto: af_alg - AEAD附加数据长度限制漏洞 | |
| CVE-2026-52970 | nft_ct: obj eval缺失expect put导致漏洞 | |
| CVE-2026-52973 | futex: 移除私有默认哈希分配中CLONE_THREAD要求 | |
| CVE-2026-52968 | KVM s390 PCI GAIT表索引双重缩放指针算法定位漏洞 |
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IV. Related Vulnerabilities
V. Comments for CVE-2026-52957
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